Tag Archives: reef urchins

Today we ate a Snack, Appetizer, and Main Course!!! (Day 7)

Hi all, it’s Faith with Day 7 updates from the 2022 Belize trip!!!

Today we woke up and gathered our last non-mpa reef data. The waves were brutal; McKenna described them as, “being thrown in a washing machine.” The reef was about 5 feet deep, and it was mostly sand. The winds made this data collection positively  horrendous! It was really hard to keep our quadrats in place, and the transect tape kept coming undone. I EVEN GOT FIRE CORALED (or “fire hydroided” since fire corals are actually hydroids). Nevertheless, we powered through.

The urchin collecting went surprisingly well. Today we collected 177 E. viridis (Reef boring urchins). per usual, we found them burrowed in tight niches of branched hard corals and under rocks. We found some exceptionally large ones today being 1.25 inches + !!! Even though there are always urchins we can’t grab, I usually notice more species variation on the reef. However, this patch reef only had E. viridis; there were no pencil slate urchins or boring urchins in sight!

Outside of the urchin hunt, we didn’t find any other echinoderms. I’ve really enjoyed being the urchin- identifier on the urchin counting team for the past few days. I realize I haven’t described it much, but that is because we usually only find Reef urchins and the occasional sea egg. Today, however, I got to throw the urchins back into the sea. They look like little soot sprites as they float to the bottom.

After the data dive, we went on a recreational snorkel. I was also fire coraled here, but I’ll forgive it. This reef had significantly less urchins than the non-mpa reef we had snorkeled earlier. The ones I saw were E. viridis and they were burrowed in coral crevices. Even though we didn’t do a formal collection, the reef had a visibly lower urchin count.

This reef also surprised us with 2 Caribbean reef squid (the only squid in the Caribbean), 2 spiny lobster, and a lionfish! (I found the lionfish btw)

Back on land, Caio showed me how to catch lizards so that I would be prepared for seeing them in Las Cuevas. (I think he likes me more now that he knows I’m the reptile taxon). According to the Caio technique, you have to cup the lizard with your hands when they can’t see you. Then, you let the front legs perch on two fingers while you press (lightly) on their torso with your thumb. I put a picture of me holding one below! The lizards we caught we brown anoles (A. sangrei), and they were climbing the trees behind the kitchen.

Later in the day, we analyzed our data about corals and urchins, answering the question, “how does the sea urchin population correlate with the live coral count, and how does this change across mpa and non-mpa reefs?” Our data was mostly inconclusive because of our improved ability to find sea urchins and environmental factors.

Last but not least, we dissected the 3 lionfish we hunted! Liliana got to dissect the big one; meanwhile, Maegan, Michiel, Ava, and I dissected “Snack,” the small 23.6g immature female. We didn’t get much data besides that, but she did eat a tiny fish in her limited years. Snack, Appetizer, and MC (main course) made a great ceviche. Also MC was a giant lionfish weighting 680g!

Anyways I’m about to enjoy some ceviche, till tomorrow!

QOTD: “Surchin af”

“BRB I’m gonna go rub this book on my head”

E. Viridis from urchin hunting!
Ceviche Prep!!!
Dissecting Snack, the small lionfish
Me holding an Anolis sangrei, brown anole
Caribbean Reef squid I found

I got really scared by an eel (Day 5)

Hi all, it’s Faith with Day 5 updates from the 2022 Belize trip!!!

DISCLAIMER: I just wrote this whole blog, and then the draft didn’t save, so here is an abridged version of what got deleted since we wake up at 6am and its almost 11 and I’m really tired 🙂

Today we woke up and continued collecting data to answer our research question. We did two snorkels on MPA reefs ( we called them MPA reefs 1 and 2, boring I know). These reefs had more cover than the non-mpa protected areas; however, they also had a lot of algae growth. Because these reefs were deeper and the tide was calmer, it was easier to measure the % live and dead coral. We also were way more successful at catching urchins. We caught about 113 total with the majority being E. viridis. However, we also saw 3 pencil slate urchins E. tribuloides, a west indian sea egg Tripneustes ventricosus (We had a bond. He latched onto me with his tube feet and held on for dear life, so I named him Fuzzy), and a super special live Clypeaster rosaceus sea biscuit. (We usually find them dead so we got very excited).  Lastly, but not least the Marine sea offcicers found some brittle stars for me since I can’t ever find them. We saw a common spiny brittle star Ophicoma echinata and a O. cinera, a banded brittle star. They were both found under rocks and coral. We only found one Diadema antillarium today and he was under some coral. We did see a nice eel on this reef (pictured below) he didn’t scare me. I decided to call him Floyd.

After the boat drove us back, we watched 3 presentations on crustaceans, green algae, and climate change’s effects on coral. Then we enjoyed some relaxation before out next dive.

Our final dive of the day was at the seagrass beds and barrier reef behind our dorms. I noticed big differences between the two areas even though they were right next to each other! The seagrass beds were extremely warmer with ample algae and a greenish water color. Meanwhile, the barrier reef was freezing cold with a pretty aqua color. It had dead coral piled up the the surface,  but sea urchins and other small creatures made their homes in the rubble. I didn’t see any echinoderms in the seagrass beds, but we saw a an eel, a stingray, 3 lionfish, 3 lobster, a white anemone, spaghetti worms (which are very fun to mess with), and a pufferfish. The pufferish and eel scared the living daylight out of me because I found them by being directly above them (which made them very upset). The eel snapped at me, but the pufferfish just stayed in place. It was scary… I named the scary eel Jade, and he has no picture.

We came back to watch 2 presentations: 1 by the coast guard and 1 by the island manager. I learned lots of interesting facts about how they keep the island “human-free.” But the most interesting fact to tell all of you is that I’m too short to join the Belizean coast guard. You have to be 5’3″ to apply as a girl and 5’5″ to apply as a guy!!!

Till tomorrow!

QOTD: “It’s commiting crabicide!” … “Did you just say crab-i-cide?”

“What does TBF mean?” (TBF, aka Tropical Field Biologists, aka what we have been called since our first meeting in March)

Banded Brittle Star O. cinera
Live Sea Biscuit Clypeaster rosaceus
The puffer that scared me terribly. I was chasing after a stingray, and next thing you know I’m in a pufferfish’s personal space
Floyd, the nice eel

Day 11: Sea Hedgehogs

I’m pretty sure that anyone reading my posts is kind of tired of me starting all of them with something like “OMG TODAY WAS SO AWESOME,” but seriously, today was so awesome, and I don’t even like the word awesome. It’s such a boring, generic word, but I can’t think of anything else that accurately sums up my feelings.

This morning, we headed out to the fore reefs (area outside of the lagoon) beside one of the cayes nearby, as well as a fore reef beside the island that we’re staying on. The fore reef was much deeper than the places we previously visited, maybe ~30 ft deep. The current was much stronger here than in areas we’d visited before, but I actually really enjoyed bobbing up and down on the waves (shout out to my dad for teaching me to swim)!

The benthos was covered with coral rubble, live hard and soft corals, and all forms of fish. If I listened carefully, I could hear colorful parrotfish crunching at the coral below. I spotted a southern stingray rippling along the floor and a Nassau Grouper, which is a highly protected endangered species of fish.   AhhhhHHH watching a healthy coral reef teeming with life makes the heart happy 🙂

Coral reefs make a great photo op!

After stuffing ourselves with homemade pizza for lunch, we headed out for my favorite part of the day: sea urchin collection! As the resident Echinodermata expert on this trip, I was kind of obliged to geek out about them. But really, sea urchins are so fascinating that I didn’t even have to pretend.

We headed out to the same shallow patch reef that we visited two days ago. This patch reef is inside what’s known as a Marine Protected Area, which is an area in which harvesting is prohibited but recreational activity is allowed. We got 25 minutes to search for and catch as many sea urchins as we could with the goal of comparing the urchins we found in the MPA to the ones we found later when we visited the non-MPA.

Those little guys were so hard to catch. They’re super spiny and like to hide in inaccessible reef crevices as well as under rocks. There’s a technique to catch them easily, but it requires extreme precision and lack of fear of stabbing oneself with a spine, neither of which I possess. You just have to reach in, grab a spine, and jerk sharply – but if you don’t dislodge the urchin on the first try, it’ll become almost impossible to grab. Its tube feet will reach out and suction to the rock when it senses danger.

I learned how to catch the urchins pretty quickly! I caught so many reef urchins and slate pencil urchins by turning over pieces of coral debris and picking them off the benthos below. They were adorable, especially the baby ones that were smaller than a centimeter in diameter!!

A bonus of turning over coral debris was that we found so many brittle stars, which are another type of Echinoderm. I know for sure that I saw at least 2 spiny ophiocomas and many Suenson’s brittle stars, but there were many others that I could not identify. They wriggled away and dropped their arms too quickly.

A tiny green brittle star that I couldn’t identify. 

I think the catch of the day was a West Indian Sea Egg that Claire found at the MPA patch reef. It was 9 cm in diameter and had a dark purple body covered with short white spines.

Here I am holding the West Indian sea egg that Claire found! Isn’t it cute?  What an egg. 

When we got back to the island and after we finished dinner and lectures, we raced crabs that we caught on the island! We dubbed it “Crab Derby,” or “Dermit Crab Race.” Each of us caught either a Caribbean Blue Crab or a hermit crab, lined them up, and let them race towards a finish line.

Once the starting time was called, there was a sudden cacophony of screams of encouragement as each of us egged on our crabs. I’m proud to announce that my hermit crab, Georgiano, won second place! He made me so proud :’)

I’ll be awake again bright and early for another packed day tomorrow, so good night!