urchin

I am currently working on the covering behavior of sea urchins, and am filming them quite a bit, both in the lab and in the field. I have observed some instances where the urchins come together, and seem to interact (communicate?). The spines and tube feet touch and move around quickly, and the...

I have recently started researching the collector urchins - sea urchins which put coral rubble, shells or sea grass on top of themselves. They do this for camouflage and UV protection. What I did was to classify the amount and type of debris on an urchin, and analyze them as a function of urchin...