Tag Archives: 2022

2022

Coral graveyard and crab shenanigans (09/06/22)

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Hi y’all, it’s Liliana again.

I am completely exhausted right now so lets hope that I can write something coherent. We started early again at 6:30, and I hate to say it but waking up that early is becoming more normal. We practiced using our transects and quadrants on land before we formed our research question and went out on the water. This time we stuck to the sea grass and swam through it looking for a specific green algae, penicillus. Each group of two with a total of seven groups swam at least 100 feet out, looking to see how many we could find in a 2×4 area every 10 feet, in the end despite all the ground covered we did not find that many. My group only found two, but we found some other exciting stuff instead like an upside down jelly! And more relevant to my taxon we found a crab next to the upside down jelly, but it was very dead and I didn’t want to get close enough to the jelly to see what the crab was. We wrote our findings and made a group poster and presentation about our mini experiment.

After lunch we went to the coral graveyard, which is great for identifying coral species since you can get a really close look at all the parts and how it looks underneath the living tissue.

After that I got to present my lecture on lionfish/invasive reef species, and my years long mission to eat a lionfish, and I hope that this trip will finally be my chance, since there are many lionfish on this reef that need to be removed.  Today was interesting in terms of crab behavior.

On my way to the bathroom I spotted this hermit crab dragging a small lizard across the ground into a hole.

We also discovered that the hermit crabs like coconut, they’ve been swarming the area where the children were cracking and eating coconuts.

Anyways, it’s time for me to go to sleep, I am exhausted and need all my rest before tomorrow.

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Day 3 – Time to start measuring things

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Today we started learning how to take measurements and collect data underwater. We made quadrants yesterday (pvc squares with string tied on to make a grid), that we will be using this week to answer questions about the reef that we will come up with! Today, as a large group, we tried to see if the density of the Penecillus sp. algae changed with distance from the shore. We ended up having a completely wrong hypothesis (that it would be denser near the shore), but at least we got a good handle on using the quadrants. It is harder than you would think to be holding onto a camera, quadrant, and a clip board underwater! There weren’t any soft corals in the sea grass area, as they tend to prefer live coral patches and reefs.

While taking our measurements, we found a sea star! Holding it felt very cool, as it started to grip your hand with suction cup like appendages. I got a great picture of my snorkel buddy Michiel holding it!

This afternoon, we got to visit a beach with countless coral skeletons that had been turned into more lasting rock, preserving them immaculately. This was a super cool way to see what the inside of corals look like, especially because when we see them in the water they are often obscured by either live coral tissue or algal overgrowth. I tried to identify a few species using guide books, but didn’t have too much luck. Now that I know what they look like though (thanks to Dr. Correa and everyone else with better identification skills), I think they will be much easier to recognize on the reef!

At the coral graveyard, I also saw a dead dried out soft coral, a common sea fan. This wasn’t calcified like the hard coral skeletons however, it was just a common sea fan missing its polyps! 

– Ava

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Cool Coral Cemetery!

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Today we got to do the first of many research projects for our class, during which I was finally able to spot some jellyfish out on the reef! As a group, we got to design a research question, collect data in the field, and analyze and present our results in poster form to our professors! We investigated the changes in density of a species of green algae as we swam farther away from shore, and it was super interesting to collect data and draw conclusions for our question all in one morning!

While we were out on the water collecting data in the seagrass beds, we spotted so many jellyfish! Specifically we spotted a variety of sizes and colors of the upside-down jellyfish (Cassiopea sp.) resting on the sea bed right near the dock! It was really surprising how many of them there were considering none of us spotted any yesterday, but we were also distracted getting used to snorkeling at the time. Here are some good pics!

In the afternoon, Dr. Correa showed us one of her favorite spots on the island which is a super rare coral cemetery, where there were tons of old coral which had been exposed to air and mineralized. Their skeletons were so well preserved and it was breathtaking to see so many corals, some of which are extremely rare now due to diseases. We spent a lot of time organizing them and identifying them by species, which was fantastic practice for our future excursions.

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First Day of Experiments!

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Hey guys! It’s Michiel; I’m glad to write to y’all again : )

This morning I woke up and had an amazing breakfast (as always here). After breakfast, Adrienne and Scott wanted us to practice using our quadrats and transects, so they sent us out to collect some data on the island using these tools. Ava and I decided that we wanted to see how much of the island sand was disturbed by crab lines. We set up a 50 yard line from our transect, set our quadrat on either side of the transect, and counted the amount of squares covering sand that was disturbed by crab lines. We ultimately determined that about 9% of the sand in the area we studied was disturbed.

After this riveting experiment, we got to put our tools to use out on the reef! Our professors left us in the wet lab with only instructions to come up with a research question and methodology. As a class, we asked “How does the density of Penicillus green algae change as we get further from the dock?” To test this, each buddy group lined up in the water near the dock and spread out horizontally so that there was at least 10 ft of space between us. Then each of us went off, placing our quadrats at every 10 foot marking on the transect to count the number of Penicillus organisms. Unfortunately, Ava and I did not see a single one (we did see two sea anemones and a starfish, though). We also did not get to see any herbivorous fish since we stayed pretty far away from the patch reefs : (. They’re really only found over there because their diet consists mostly of algae that grows on the reef, so it would be unwise for them to go too far.

Thankfully, the other groups did find some Penicillus, so we pooled our data and determined that the organism increases in density as one goes further from the dock. We believe that Ava and I did not see any because the lush sea grass in our area may outcompete or cover it.  After discussing our results, the class put together a poster and presented our research to Scott and Adrienne.

After these presentations, we went to a very cool area of the island that was just a huge fossilized coral reef. Adrienne showed us lots and lots of different, very well preserved, corals. She identified some of the most common corals we have been seeing in the reef and told us about their importance and history. She even showed us a couple species that are currently rapidly dying off in coral reefs.

After the fossilized coral area, we had a presentation, then dinner, then I presented on herbivorous fish (I hope you all enjoyed), then there were a couple more presentations.

Overall, today was full of activities and it was our first time conducting research in the water! We all had lots of fun and I’m sure we’re all excited for the upcoming days of research in bigger coral reef systems.

Also, here’s a picture Ava took of me holding a starfish (thank you Ava!)

2022, Uncategorized

First Snorkel!

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After naturally waking up to birds and sun, we got our snorkeling stuff ready for our first trip on the water. Right on the dock, I was struck by the number of fish I could see! There were large fish in close proximity to one another with their fins out of the water, and their was an enormous school of small minor sized fish everywhere! When I got in the water I felt like the whale shark in the aquarium with all the sardines parting around it.

In the reef, we found astounding and dynamic “patch reefs” or structures of chorals, sponges, fish, etc, among the sea of seagrass in the lagoon of the atoll. I was struck by the 3-dimensional variety of shapes and sizes of organisms! Some highlights included seeing a lion fish and a small barracuda.

Dr. Correa also helped me pick a green algae from among the sea grass. I had seen the type of algae she picked but had been initially confused as I thought they were fuzzy spheres on sticks like lollipops. However, they were actually Bristle ball brush algae with rounded tops, a genus called Penicillus I did have on my taxonomic card when we got back! I was able to use the guidebook in the station to identify it as Penicillus Dumetosus mainly through the shape of the top which was much longer than wide and flat on top.

I also saw lots of Halimeda green algae mostly on top of the patch reefs characterized by long chains of roundish segments. Again using the guide books I think it was Halimida goreari as the segments seemed to match the shape and size description best of flattened 2.5-6mm wide segments.

After that we also did a scavenger hunt to practice being in the water with clipboards and cameras in another part of the atoll that was much shallower and sandier. I saw some green algae that appeared to a type of Caulerpa (sea grapes) and Udotea (Mermaid’s fan), but I plan to look at the pictures more closely to get the exact species tomorrow!

2022

Day 2: Snorkeling and the MOD

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After a good nights rest, we rose early in the morning to start off our day snorkeling at Glover’s Reef! We had all our gear and were ready to start our first snorkeling adventure by 8:05 am which was a record breaking time according to our professors. I was amazed by the biodiversity of marine life on our snorkel! I recorded hard corals, soft corals, damsel fish, puffer fish, parrot fish, lion fish, lobster, and many more interesting species! Nyala and Caio pointed out my first annelid- Christmas tree worms! These worms bore into coral and have a spiral-shaped crown that are always seen in pairs of two (even though it is actually one worm). They can come in all shapes and colors and will retract back into the coral as if they were never present if they sense water movement of a big fish or larger creature, like us. (sorry for the poor camera quality!)

Hydrozoa are hard to locate on the reef but I spotted some fire coral today! Fire coral is an interesting creature because it is an athecate hydroid that behaves like a reef-building coral.

We also built quadrates which is a tool used by field biologists to help us measure and collect data!

Later for our second snorkel of the day we were given two choices- the safe choice of the adventurous choice. The safe choice was to snorkel in the reef we had just been at while the adventurous choice required us to walk through the MOD… Mangroves of Death that had swarms of mosquitos that would bite you even as you were running. We of course chose the adventurous path, and the misquotes were terrible but the marine organisms we saw at this next location made it worth it. We saw many fish as well as a nerf shark and sting ray. I also got the chance to observe two more annelid species. The magnificent feather duster worm was a multicolored worm (red and white) with large feather-like bristles shaped like- you guessed it- a feather duster. This worm will also retreat into the coral if there is water movement. I think I also spotted a spaghetti worm’s long white, thin tentacles under the coral, but it was difficult to tell.

Afterwards we listened to some presentations that helped us learn more about different reef creatures and reflect on the journey ahead. More to come! 😉

~Maegan 

2022

First Reef Day <3

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The McKenna that is writing this post is a completely different person than the McKenna that wrote the previous blogs. Today, I saw coral reefs with my very own eyes, and it was such a life-changing experience!

The day started early with breakfast at 7:00 am. We wasted no time getting into the water, and we swam to path reefs close by the Glover’s dock. I was surprised by how much sediments can make snorkeling an issue; one kick downward with your fin and all of the scenery around you is made barely visible. Needless to say, I quickly learned to stay on my stomach. At the patch reefs, I saw so many amazing things, notably a baby lionfish and a pufferfish. On the way back, I saw a Great Caribbean anemone in a bed of seagrass! (Please forgive that this is a photo taken of a digital picture)

After getting back, we made reef supplies for future endeavors, including an expertly-woven quadrant and a top-of-the-line snorkel clipboard with waterproof paper!

After lunch, we suited back up and sprinted (I’m not kidding, we actually sprinted there to avoid the swarm of mosquitos) to explore the mangrove of death (oooo aaahh). We brought our clipboards with us to do a scavenger hunt! Liliana and I were buddies, and we found lots of cool things, like a sea cucumber and a Christmas tree worm. We decided to swim back because the mosquitos were that bad, and that is when I spotted a warty corallimorph! This is usually a solitary organism, so it was all by itself. (Again, photo of a photo)

The mangrove snorkel was amazing! Afterward, we ate dinner and gave presentations.

Today was incredible. I am so excited for the upcoming reef days to explore more! Another night of needed rest awaits me. A TFB always needs their beauty sleep 🙂

– McKenna

2022

Beware the Mangroves of Death

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Today was the first snorkeling day!

We started out by snorkeling in the area by the dock, to make sure everyone was comfortable. We then moved to a patch reef further out, and we saw a lot of cool organisms, including some Christmas tree worms, huge brain coral, a corallimorph, some lionfish, and some lobsters. And even more exciting than that-lots of white scroll algae (padina jamaicensis) and sargassum (I did not identify it, but it sure was floating)!  Afterwards we came back to the wet lab and constructed quadrats- 3×3 foot pvc pipe frames with strings woven across to form crosshairs. We will be using the quadrats to measure stuff in the field, starting tomorrow.

After lunch we had a vote-either to return to the patch reefs we had gone to this morning, or go to a new area, through the Mangroves of Death (MOD). The professor’s kids (who are along for the ride, I don’t know if I mentioned that) provided a very convincing argument, including the threat of crabs in our rooms if we did not choose the new area. So a landslide vote was probably expected, even considering the risks. We suited up in our snorkeling gear, including our masks, and then ran through the mangrove forest to the reef. At first it was fine, but then we began to feel the pinches of the mosquitoes biting through the dive skin. We had been descended upon by the mosquitoes of the MOD! We ran faster until we finally made it into the water. Not one person was left unbitten.

We then had an enjoyable experience in the patch reef, looking for the organisms or interactions listed on our scavenger hunt pages. Some notable things we saw were a sea urchin and many species of colorful fish.

When we were done, we were presented with the option of either running back through the MOD, or snorkeling. The choice was obvious. While snorkeling back, we saw many orange sponges, some anemones, a yellow ray, and a shark among the sea grass! All around, snorkeling back was the right choice.

We then listened to our classmates present their topics and taxa, and then we split for the night.

Overall, the patch reefs had so much to offer, and I’m looking forward to exploring them more! Also tune in tomorrow, I heard we’re going somewhere deemed “Un-Belizeable!”

-Elena

ps. happy birthday Hugh!!

pps. sorry for the bad photo quality-I can’t easily download the pictures from the digital camera to my computer :'(

picture one is part of the group, picture two is the shark, picture three is y-branched algae (dictyota cyliolata), picture four is white scroll algae (padina jamaicensis) and an unidentified brown algae, and picture five is the kids and their hermit crab empire (under each coconut shell is a hermit crab)!

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First Day of Snorkeling: The Mangroves of Madness

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Today was our first day snorkeling out on the reef! We started the day by getting our fins wet in the patch reefs right near the dock  in front of the station. This was so exciting, we got to see the reef in person, and start to identify some of its organisms.

After this initial excursion, we decided to see more patch reefs through a different access point on the island which led us through a mangrove landscape. Mangroves are very cool, the trees have such strong and graceful looking root structures, but getting through this area was miserable because they are host to hordes of mosquitos! We quite literally ran to get in the water to keep them from swarming us, and none of us left unscathed.

But once we were out in the water, we saw so many cool things! It was really interesting to see the diversity of 3D coral structures that can be visible from even a small little patch. Some organisms of note include  a sea cucumber, conch shells, and I even spotted a small shark in the seagrass! Unfortunately, I still have yet to see any jellyfish or ctenophores, but I am still hopeful that we will see some when when we get into deeper waters.

2022

Mosquitoes: ♾, TFBs: k/o

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Today we went into the water! Swimming felt so nice, especially with the humidity down here.

For breakfast, the pancakes had banana in them!! 😋

First, we went to the patch reefs near the dock, where I found 4 queen conch shells. It seems to me like these are the most obvious molluscs present at the reef, especially since they tend to be large, had a very definite crown, and a pink lip! (I learned today that they’re called queen conchs due to their spiral looking like a crown!) We were in the water for about an hour, just getting a feel for what it’s like to snorkel in the ocean. I got So. Much. Water. In. My. Mouth.

So after we got back, we had some time to rest, then we put some equipment together that we’ll need in the coming days. Lunch consisted of some chicken wings with BBQ sauce, fries, and coleslaw. The food here is so good.

We then “voted” (really well we’re coerced by amazing speeches of Caio and Nyala) to take a trek through the mangroves of death. NEVER AGAIN. Imagine you are wearing a long sleeve shirt with a yellow sleeve. Your sleeve is now black. It is covered with mosquitos. It may as well be made of mosquitos. You try to run. They smell your fear. They know they have won. They take no mercy. They swarm. You try to jump into the water to escape them. It’s too shallow to dive under, your effort is futile. You accept your death and continue on, knowing that they are the rulers of this island.

 

Ok, but once we were in the water for the second time, with clipboards and cameras, we tried to do a scavenger hunt with varying levels of success (I kind of forgot to write things down, the waves kept pushing me over).  We saw a sea cucumber! It was quite large! (See picture)

 

once we got back to land, 2 people (Ava and Rusty) presented their taxon lectures. We broke for about an hour, and then had dinner. The cheesecake was so good! Then we finished the day with 3 more lectures (1 topic, 2 taxa) (Maegan, Phoenix, and Michael).

 

good day over all. The aliens in Lilo & Stitch were wrong. The mosquito population is thriving. They are the apex predator.