Unit One Introduction to Marine Invertebrates - the National Sea ...

BAREFOOT
If the day is warm, walk barefoot in the sand or on the warm rocks. Describe
how it feels.
TASTE TREATS
If your beach site is free from polluting influences, taste the sea. Is it
really salty? With someone along who knows local marine life, taste sea
lettuce, raw sea urchin eggs, or edible land plants that grow at the edge of
the sea. Describe how each tastes.
BARNACLE FEED
Find barnacles in a tidepool and watch them eat. Can you stick your tongue
out and back as fast thev can?
WORM SQUIGGLE
Find a worm. What is it doing? Squiggle your body like the worm does!
MUSCLE UP
Find a blue mussel. Can you see the golden threads it makes so that it can
hang on to rocks? Show your muscle. How do you hang on to rocks?
CRAB WALK
Practice a crab walk, using your hands and feet and facing upward.
try making just your hands walk like a crab. Cross them at the wrists and
move your fingers as if you were walking forward, backward, and sideways.
SHELL SOUNDS
Find some snails and have a snail race. Now find a friend and have you
own snail race. How fast can you crawl?
CRAB MOLT
Look for an empty crab shell. Did the crab die or did it merely shed its
shell (molt) so that it could grow a bigger one? (If it shed its shell there
will be a slit-like opening where it backed out. Save some crab shell parts
for later studies in your classroom.)
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