Lake in the Hills, Illinois. Lake in the Hills (often abbreviated L.I.T.H. or LITH) is a village in  McHenry County, Illinois, United States. The population was 23,152 at the 2000 census. A 2006 special census put the village's population at 29,175.
Sea cucumbers are typically 10 to 30 cm (3.9 to 11.8 in) in length, although the smallest known species are just 3 mm (0.12 in) long, and the largest can reach 3 meters (9.8 ft).The body ranges from almost spherical to worm-like, and lacks the arms found in many other echinoderms, such as starfish.
Sea Cucumber Facts and Information. Introduction to Sea Cucumber. The Sea Cucumber is a type of marine life form. They are a type of echinoderm so they have an endoskeleton. They also have various forms of connective tissues that comprise them. There are many species found and experts believed that they may not have even identified all of them yet.