Because of a tragedy quite usual in the life of the sea—all his brothers and sisters have been swallowed by a hungry tuna—Swimmy, the only black fish of the entire school, is left wandering alone and in dangerous waters!

However, being a curious little fish, he is soon able to overcome his initial fears and decides—hesitantly at first—to explore the unknown depths of the ocean.

At the sight of each new marvel his courage grows step by step with his curiosity, until at last he devises for himself and his newly adopted brothers and sisters a safer way to live in this world.

From the dust jacket