prostacyclin (ËprÉstÉËsaÉªklÉªn) n (Biochemistry) biochem any of several prostaglandins produced in the blood vessels, causing vasodilation and inhibiting platelet aggregation. prosâ¢taâ¢cyâ¢clin (ËprÉs tÉËsaÉª klÉªn) n. a prostaglandin, C20H32O5, that specifically inhibits the formation of blood clots.
mongoose Facts. Although they appear remarkably similar to weasels in form and lifestyle, mongooses are actually members of the superfamily feliforma, or cat-like carnivores, while weasels are in the superfamily caniforma or dog-like carnivores.
Unlike other marine mammals, they do not have a layer of blubber to help them keep warm. Sea otters are a keystone species, meaning their role in their environment has a greater effect than other species. As predators, sea otters are critical to maintaining the balance of the near-shore kelp ecosystems.ea otters are also one of the few mammals other than primates known to use tools. They use small rocks or other objects to pry shellfish from rocks and to hammer them open.