This diorama shows the life that teams on, over and under an oyster bar. These animals can only be seen when under water. As soon as the tide goes out, they seem to vanish. Once the water rises, barnacle feet extend, sand builder worm heads pop out, ghost anemone tentacles emerge, and fanworm gills unfurl.

One female blue crab swims by a red beard sponge, while another has dug herself into the mud to lie in wait for unwary prey. An oyster toadfish resides in an old paint can, while a shoe hosts a small and varied community of its own.