Definition: Active swimming organisms that live in the water column and are able to move independently of the water mass (adapted from Lincoln et al., 1998).
Definition: hydrolases found in the venoms of cephalopods, hymenopterans, remipedes, reptiles, and mammals. Effects: prevention of blood coagulation, and the causing of vasodilation, smooth muscle contraction, pain, and inflammation.
Definition: A structural quality inhering in a bearer by virtue of the bearer's being thicker or more closely packed together; pressed tightly together.
