Benthic
Occurring on the bottom of a body of water.

Balanus
Acorn barnacle

Benthic life
those forms that live on the bottom(epifauna) or in the
bottom(infauna).

Bio-mass
the total amount of biological material founf in the
environment.

Bloom
An abnormally dense population of phytoplankton caused by
rapid reproduction under
optimum conditions.

Balanus
Acorn barnacle, indicator organism for mid-tide zone

Binomial nomenclature
The system using two names, genus and species, to identify
organisms.

Blade
A broad, flattened leafliki structure on algae.

Biramous
Having two branches.

Baleen whales
Whales that are filter feeders.

Bathypelagic zone
the area from 1,000 meters to 4,000 meters deep.

Bivalvia
Class name of the clams (formerly called pelocypoda).

Byssal threads
Means by which the sea mussel attach to the substrate.