Do sea cucumbers have a tissue level of organisation?

Depending on the species, sea cucumbers have between ten and thirty such tentacles and these can have a wide variety of shapes depending on the diet of the animal and other conditions. Many sea cucumbers have papillae, conical fleshy projections of the body wall with sensory tube feet at their apices. read more

I have, or should I say had, a 75-gallon reef tank that includes a variety of soft and hard corals, several species of hermit crabs, six small burrowing sea cucumbers, two species of shrimp, a blue linkia starfish, an Australian sea apple and 12 different fish, including two fairy wrasses, a mandarinfish, three anthias, a flame angelfish, a bicolor blenny, a longnose hawkfish and several small gobies. read more