of his family were put to the test now, as he darted like an arrow
through the water, the cruel shark close behind.

But presently Sammy began to tire. In another moment all would have
been over, had he not spied far below him, partly hidden by seaweed, a
ledge of large rocks. His instinct told him that under one of those he
might find a hiding place. Down he darted, as quick as a flash, and in
another instant just as the shark turned on his side and opened his
huge jaws, Sammy lay safe, but quivering, in a friendly hollow under
the sheltering rocks.

Mr. Shark, disappointed at losing his dinner, swam around and around
the ledge vainly trying to find some way of squeezing his big body in
among the crevices of the rocks, but at length abandoned the attempt
as hopeless, and departed in a very bad humor to look for another
victim.

It was some time before Sammy recovered enough from his fright to look
about him, but presently his ever-present curiosity overcame other
feelings, and he began to examine his new quarters with much interest.

He was in a tiny cave, whose hard bottom was covered with sand and mud
deposited by the constant washing of the tide. From the walls and
ceiling hung curious weeds, and a few brightly colored shells lay in
little holes and crevices formed in the rock.

While thus employed in viewing his surroundings Sammy discovered a
crab partly hidden in the mud on the floor of the cave. It was a very
strange-looking creature, for while the fore part of it had legs and
claws like an ordinary crab, the rear part was concealed in the shell