Results 1-3 of 16
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.
Marsh snails also feed on detritus at low tide, but seek shelter from the high tide
up the stem of salt marsh hay which is never fully submerged. These tiny
gastropods extract oxygen from the atmosphere, not the water. The sprawling
roots of the ...
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 the majority of phytoplankton and appear in hundreds of different
shapes and sizes. When viewed microscopically, their great variety is quite
striking. Silica, found in their cell walls, is the substance from which glass is
derived. The presence of ...
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
gain weight to make the long journey back to warm, equatorial waters to mate
and bear young. They feed only rarely the rest of the year, and some not at all, so
a thick supply of blubber is essential to their survival. Long summer days of
feeding make ...
What people are saying - Write a review
I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review