Marine mammal
Код 3392311
- ISBN: 978-5-5085-5219-0
Код 3392311
High Quality Content by WIKIPEDIA articles! Marine mammals, which include seals, whales, dolphins, and walruses, form a diverse group of 128 species that rely on the ocean for their existence. They do not represent a distinct biological grouping, but rather are unified by their reliance on the marine environment for feeding. The level of dependence on the marine environment for existence varies considerably with species. For example, dolphins and whales are completely dependent on the marine...
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