why-animals-do-the-thing: sea-nerd-adventures: SUPER COOL INVERT SHENANIGANS Sea urchins have modified mouth parts on the underside of their bodies called an Aristotle’s lantern. The lantern is made up of tooth-like plates that scrape up bits of
tags: this is actually an interesting mouth, >_>, can be good for a good critter
original: https://aeritus.tumblr.com/post/168752195461