1 There are some 1,250 known species, and many of these animals are indeed shaped like soft-bodied cucumbers. 2  All sea cucumbers are ocean dwellers, though some inhabit the shallows and others live in the deep ocean. 3  They live on or near the ocean floorâsometimes partially buried beneath it.
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Glossary Â» Units Â» Mass Flow Rate Â» Pound Mass Per Second. Pound Mass Per Second (lbm/s) is a unit in the category of Mass flow rate. It is also known as pounds/second. Pound Mass Per Second (lbm/s) has a dimension of MT-1 where M is mass, and T is time. It can be converted to the corresponding standard SI unit kg/s by multiplying its value by a factor of 0.453592.