They were both so used to salt water that there was no danger of taking cold.
Finally the little girl was wakened by a splash beside her and a grunt of satisfaction from Cap'n Bill.

She opened her eyes to find that the Cap'n had landed a silver-scaled fish weighing about two pounds.

This cheered her considerably and she hurried to scrape together a heap of seaweed, while Cap'n Bill cut up the fish with his jackknife and got it ready for cooking.
They had cooked fish with seaweed before.

Cap'n Bill wrapped his fish in some of the weed and dipped it in the water to dampen it.

Then he lighted a match and set fire to Trot's heap, which speedily burned down to a glowing bed of ashes.