This is an acorn worm like the one in the first image, except of the "northern pink" variety rather than "southern purple."

Monty Priede says these primitive acorn worms help researchers understand the evolution of vetebrate animals. "They have no eyes, no obvious sense organs or brain but there is a head end, tail end and the primitive body plan of back-boned animals is established," says Priede. "One was observed showing rudimentary swimming behaviour."