We all know that a real sea cucumber doesn't entirely resemble the famous Kevin the Sea Cucumber. Instead they are marine animals who have leathery skin and an elongated body that contains a single, branched, gonad. Many of these globally highly populated creatures are consumed by us humans, while others serve in the ecosystem to help recycle nutrients, break down detritus, which are fragments of dead organisms, and other particles that bacteria can also degrade.
Slow Movement
Even though they look like solid rocks, most sea cucumbers have five strip-like ambulacral areas running along the length of the body from the mouth to the anus. The three on the lower surface have numerous tube feet, often with suckers that allow the animal to crawl along. The two on the upper surface have under-developed or vestigial feet, and in some cases lack tube feet completely. In order to move, sea cucumbers use their tentacles that can be as little as ten to as much as thirty cm.