Usborne 1000 things under the sea
Part of the 1000 Pictures series
A gorgeously illustrated reference book with exactly 1000 things that are found in our oceans, from colourful fish and coral reefs to submarines and shipwrecks.
Every picture is labelled with its name, and there's an index of all the names at the back of the book.
A wonderful way to discover the wildlife and ecology of different ocean habitats.