Marine Biology

abundant animals areas bacteria benthic benthos biological bioluminescence biomass body bottom carbonate catch cell coastal colour common concentrations continental shelf continents copepods coral reefs crabs crustaceans currents cyanobacteria deep deep-sea density depth diatoms dive earth energy environment estuaries feed feeders filter fins fish fisheries gills groups growth gyres habitat herbivores hydrothermal vents important increase intertidal zone kelp larvae latitudes layer light intensity mangrove mariculture marine biologists marine organisms mesopelagic mid-ocean ridge molecules move mussels nekton nutrients O₂ occur ocean water Pacific particles pelagic percent photic zone photosynthesis phytoplankton plankton plants plates polychaete population predators pressure primary production red algae relatively ridge salinity salt marsh sea floor sea grasses sea surface seawater seaweeds sediments shallow water shores shrimp snails species squid surface water swim bladder temperature thermocline tidal tides trenches tropical tuna upwelling vertical migration waves whales wind zooplankton