belonoid a. [Gr. belone, needle; eidos, form] Needle-like in shape.
benthic a. [Gr. benthos, depths of sea] Pertaining to the sea-bottom; maybe extended to include some of the benthic animals: crabs, snails, starfish, certain worms, clams, sponges, sea anemones, corals, bryozoans, crinoids, barnacles and tunicates.
benthopotamous a. [Gr. benthos, depths; potamos, river] Pertaining to organisms or plants living on the bottom of a river or stream.
Bergmann's rule The principal that the average body size is geographically variable in that the animals are larger in the cooler climates of the range of a species.
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