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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
Dwelling on the beach in burrows, they can remain out of the water for long
periods of time. Other crustaceans such as sand fleas burrow within the surf zone
where they are harvested by many species of birds. Clams burrow in the sand as
Like those shown below, many build tubes for support while others burrow into
the sand at the base of the pools and use long feeding tentacles to gather food.
Tube worm cases Why would these tubes provide adequate shelter to this tube ...
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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