Download or read book Whales, Dolphins and Seals written by Brett Jarrett and published by Bloomsbury Wildlife. This book was released on 2021-08-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a complete field guide to the world's marine mammals. It covers the field identification - including geographical, sex and age variations - of all the whales, dolphins, seals and sea cows, plus the Walrus, Polar Bear and marine otters.