Download Marine Mammals of the World: A Comprehensive Guide to Their by Thomas A. Jefferson, Marc A. Webber, Robert L. Pitman PDF

By Thomas A. Jefferson, Marc A. Webber, Robert L. Pitman

With insurance on the entire marine mammals of the area, authors Jefferson, Webber and Pitman have created a easy advisor to spot marine mammals alive in nature (at sea or at the beach), useless specimens "in hand”, and likewise to spot marine mammals in response to gains of the cranium.

This convenient consultant offers marine biologists and lay individuals with certain descriptions of diagnostic gains, illustrations of exterior visual appeal, attractive pictures, dichotomous keys, and extra. complete colour illustrations and bright pictures of each dwelling marine mammal species are integrated, in addition to specific maps exhibiting various info.

For readers who hope additional session, the authors have incorporated a listing of literature references on the finish of every species account. For an improved figuring out of habitation, this consultant additionally contains recognizable geographic varieties defined individually with colourful work and images. All of those crucial instruments supplied make Marine Mammals of the realm the main targeted and authoritative consultant on hand!

* comprises exceptional images of each species of marine mammal for exact identification.

* Authors' collective event provides as much as eighty years, and feature obvious the vast majority of the species and targeted geographic types defined within the guide.

* offers the main targeted and anatomically actual illustrations presently available.

* targeted emphasis is put on the identity of species in "problem groups,” corresponding to the beaked whales, long-beaked oceanic dolphin and southern fur seals.

* encompasses a distinctive checklist of resources for additional information behind the booklet.

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Additional info for Marine Mammals of the World: A Comprehensive Guide to Their Identification

Sample text

M. musculus) are 23-27 m long (with females growing larger than males). The Antarctic blue whale (B. m. intermedia)is larger, and generally measures up to 29 m, although a specimen over 33 m was once taken by geographic forms Standard-form blue whale (B. m. musculus/indica/intermedia) -- Three of the four subspecies of blue whales share a similar external form (but differ from the pygmy blue, described below). They occur in the Pacific, Atlantic, Southern, and portions of the Indian Ocean. They are blue steel-gray in color.

Most North Atlantic right whales are predominantly Mysticeti, Family Balaenidae. A recent study has demonblack, but there may be large white splotches of varying strated that right whales in the three major ocean extent on the underside of the belly and the chin (about basins where they occur (North Pacific, North Atlantic, and Southern Ocean) represent separate lineages. As 20-30% of whales have them) and sometimes elsewhere on the body (not as extensive as in the southern right such, three species of right whales are now recognized: whale, however).

A nubbin such as this may be and position. Blow shape and height can also be useful, but the variability congenital, or a killer whale may have bitten off the fin. Eastern Pacific. PHOTO:C, within species must be kept in mind. OEDEKOVEN/NOAAFISHERIES/SWFSC 44 Marine Mammals of t h e W o r l d The sleek form of the blue whale is clearly evident only from The massive rostrum of the blue whale is nearly flat, with a the air. The pale, blue-gray color with individually-identifiable single prominent median ridge.

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