5. Of what use are Shore Crabs?

6. How are Lobsters caught?

[Illustration: THE LOBSTER.]




LESSON V.


SHRIMPS, PRAWNS AND BARNACLES.

In nearly every shore-pool you may see Shrimps and Prawns darting out of
sight, and, for every one you see, there are many more hidden away.
These delicate, transparent, lively creatures are not much like the
boiled Shrimps and Prawns of the fish-shop.

They are the prey of so many fish, crabs, and birds, that they have
learnt to "make themselves scarce." Have you ever watched them in a
glass tank, or aquarium? If so, you will know that it is not easy to see
them. In the shore-pools it is harder still.

Some are swaying about in the still, clear water, moving their long
feelers from side to side. Others have burrowed into the sand. In doing
this, they raise a sandy cloud, which settles on them and hides them. To
catch some, you must use a "shrimp-net," for they can dart across the
pool like arrows.