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The tiny periwinkle can be seen throughout the estuary, grazing on algae. In the
high marsh, fiddler crabs feed on detritus at low tide and retreat into their burrows
at high tide; their claw-waving territorial and mating displays are highly visible.
Tiny plants, therefore, form the basis for all life in the pelagic zone. Diatoms,
dinoflagellates, foraminiferans (for a MIN i fer ans), and radiolarians are all
examples of marine phytoplankton, the first two being the most common. Diatoms
make up ...
These plates serve as food-catching brushes for the whales' tiny planktonic prey.
It is the baleen whale that migrates to the poles to feed on plankton in the
summer. This time of feeding is extremely important, as these huge animals must
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