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 urchin facts! They are even featured in Animal Crossing.
#urchins #invertebrates #coralreefs #learn #nature #marinelife #science #animals #venomous
Image Credit: By Nhobgood (talk) Nick Hobgood - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11449176
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