phytoplankton
zooplankton
nekton
benthos
pelagic
neritic
photic zone
aphotic zone
net primary production
critical depth
photosynthesis
chemosynthesis
marine snowlinks:
phytoplankton
Grass of the Sea: Phytoplankton (microscope sales material)
Phytoplankton and the food chain
Zooplankton
Zooplankton museum collection
Ocean color and marine productivity from space
University of Nebraska: Marine Ecology
University of Nebraska: Life Cycles and Food Production