This book serves as a comprehensive guide to the marine mammals found in British waters. It details the whales, dolphins, porpoises, and seals inhabiting the region, providing information on their identification, behavior, and distribution, with a focus on where enthusiasts can best observe them in their natural habitats.

This work is recognized as a valuable resource for naturalists and wildlife enthusiasts interested in the marine mammals of the British Isles. Its detailed approach to identification and location makes it a practical field guide. The book is expected to appeal to both amateur observers and those with a more scientific interest in cetaceans and pinnipeds.