Callinassa californiensis | Unfortunately I realized this photo isn't in focus, but I'll still post it. Kept with the Fat Inkeeper Worms near the entrance of the Aviary (I'm pretty sure that clam is food and not an exhibit animal)
Both the innkeeper worms and the ghost shrimp only eat microorganisms or detritus, plus some species of clams such as Cryptomya californica reside in burrows of both species in the wild, so I'd assume they were added as tank mates. Though I am not sure which clam species are in the tank as there seem to be a few.
