Simple text and photographs present facts about and introduce young readers to marine animals.

Under the sea -- Phytoplankton -- Zooplankton -- Blue whale -- Whale shark -- Green sea turtle -- Nautilus -- Hide or hunt -- Megamouth shark -- Manta ray -- Oceanic whitetip shark -- Sailfish -- Comb jelly -- Siphonophore -- Dumbo octopus -- Vampire squid -- Viperfish -- Anglerfish -- Sea cucumber -- Spider crab -- Glossary.