Once the sea squirt becomes stationary, it literally eats its own brain. The life of the sea squirt tells us something interesting about what brains may have evolved for to orchestrate and. what we can learn from the sea squirt! What we can learn from the sea squirt! Skip navigation sign in. so, yes, in common parlance, the sea squirt eats its own brain, such as it is. But since the sea squirt no longer needs its brain to help it swim around or to see, this isnt a great loss to the creature. It needs this use this now superfluous body material to help develop its digestive, reproductive, and circulatory organs. Ascidians are almost all hermaphrodites and each has a single ovary and testis, either near the gut or on the body wall. In some solitary species, sperm and eggs are shed into the sea and the larvae are planktonic. In others, especially colonial species, sperm is released into the water and drawn into the atria of other individuals with the incoming water current. Fertilization takes place here and the eggs are brooded through their early developmental stages. Terrell told us via facebook about one such example the sea squirt eats its own brain as part of its life cycle. Some animals will, on occasion, eat parts of their own bodies. In their larval phase they swim about vigorously and intelligently searching for the perfect rock to make their permanent home. Once established in its new home, the sea squirt proceeds to eat its own tail, absorb its own eyes and then swallow its brain. sea slug eats own brain? March 18, 2010 from charles stenholm a lecturer for the learning company quoted an (unnamed) book of daniel dennetts in which he supposedly cited research by the emperor hirohito on a species of sea slug which sought out a rock on which to attach itself and thereupon ate its own brain which was only useful to help it find an appropriate rock. Many physical changes occur to the tunicates body during metamorphosis into an adult, with one of the most interesting being the digestion of the cerebral ganglion, which controls movement and is the equivalent of the human brain. From this comes the common saying that the sea squirt eats its own brain. you dont have to watch the walking dead to catch some brain-eating action. In yet another example of the truth being stranger than fiction, it turns out that the animal kingdom has produced. Most famous as the creature that settles down and eats its own brain (though that is not exactly correct), it appears the humble sea squirt has spectacular regenerative abilities as well, thanks to regeneration niches packed with stem cells.