Day 13: Collecting Sea Urchins

Today, we returned to the two patch reefs we went to for our previous research project, one inside the marine protected area and one outside. In both patches, we collected sea urchins for thirty minutes and then measured their size to compare the sea urchin community structure between the reefs. We ended up collecting Long-spined, Reef, West Indian Sea Egg, and Red Heart sea urchins.

Bucket of sea urchins

In the evening we went on a night snorkel. We got lost and swam around the sea grass a while because we couldn’t find the patch reef. By the time we found it I was pretty tired. I did see a Spotted Eagle Ray swim right by me which was amazing.

I saw more Giant Sea Anemones (Condylactis Gigantea) today which I am finding to be the most common anemone in these patch reefs. Some of the time they have had green tips and other times light pink tips. There is a lot of color variation in many anemones, corallimorphs, and zoanthids. Bella saw a Mat Zoanthid (Palythoa caribaeorum) on some coral which has green tones and forms polygons when packed tightly in colonies.

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