"He's waiting for some one to come along and feed him," said Bert.

"I guess he'd eat a lot," laughed Freddie, looking at the rows of big
teeth in the crocodile's mouth.

They passed on to the pool of the sea lion. That sleek, brown animal was
swimming about like a big fish, now and then stopping under one of the
pipes where the water ran into his pool, and holding his mouth under the
little stream as though taking a drink. Now and then he barked like a dog.

Around the stone ledge, or wall of the pool, was a wire grating, and near
the floor was a sort of pipe running all around, so the smaller children
could step up on this to look in--something which the big folk did not
have to do.

"Be careful!" cried Nan, as Flossie leaned well over the edge to get a
better look at the sea lion. "You might fall in."

"She could get a ride on his back if she did," said Freddie.

"Well, I'm not going to!" exclaimed Flossie, drawing back, a little
frightened, as the seal splashed the water right under her, some drops
going in her face.

They watched the seal for a while, went over to the other tanks, where
some sturgeon and other big fish swam about, and then Freddie called:

"I want to see the big turtles! Where are they?"

"Over here," said Mr. Bobbsey, leading the way toward the south end of the