sea squirts are called that because, um, they squirt!
all sea squirts are filter feeders that actively pump seawater through their bodies using a series of chambers and valves, very much like a disembodied heart.
too much. stop that, sea squirts.
and lightbulb sea squirts, while very pretty, are regrettably no exception- if you were a diver and happened upon a colony of them, like so:
you would see them all gently pulsating in the current. and then you would get the Davy Jones theme from Pirates of the Caribbean stuck in your head just SO hard.
