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Sea urchins are members of the phylum Echinodermata, which also includes sea stars, sea cucumbers, sand dollars, brittle stars, and crinoids. Like other echinoderms, they have five-fold symmetry (called pentamerism) and move by means of hundreds of tiny, transparent, adhesive " tube feet ".
urchin. Characteristics of individual repetitive sequence families in the sea urchin genome studied with cloned repeats. In animal systems, studies on the activation of sea urchin and clam eggs have also found changes in enzyme activity and location.
Here's the sea urchin 101. Everything you need to know about these spiky echinoderms. Sea urchins (Echinoidea, regular urchins, porcupines of the sea). Sea u...
Learn about sea urchins, spiny marine animals with a globular body and a radial arrangement of organs. Find out how they feed, move, reproduce, and have poisonous spines and teeth.
12 de nov. de 2009 · Visually arresting, hazardous to swimmers, and—to some cultures—delicious, sea urchins are also revealing new information to the scientists who study them. Here, red sea urchins carpet a kelp...
Everything you should know about the Sea Urchin. The Sea Urchin is a colorful sea creature that resembles a pincushin filled with needles.
Learn about the diverse and fascinating world of sea urchins, spiky creatures that belong to the group of marine invertebrates called echinoderms. Discover their body structure, diet, reproduction, venom and more.
