New research in PLOS ONE uncovers an important discovery in the study of marine mammal health by being the first study to detect Otariid gammaherpesvirus 1 (OtGHV1) in free-ranging South American ...

Marine mammals are any mammal that makes the sea its home for part or all of its life. This includes cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions, and walruses), sea otters ...

Seals and sea lions belong to a group of marine mammals called pinnipeds, which means fin or flipper-footed. These animals live in the ocean, but are able to come on land for long periods of time.

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Among the marine mammals swimming through our planet’s seas, whales often steal the evolutionary spotlight. A stunning array of fossils demonstrate how whales evolved from hoofed mammals that adapted ...

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Modern pinnipeds (the group that includes seals, sea lions and walruses) show a range of sexual dimorphism (large differences in size between males and females) and mating systems that span the ...

Re “Seeing old photo of La Jolla prompts memories, question” (Sept. 14): The main reason for the increase in sea lions and seals is obviously the Marine Mammal Protection Act. We no longer hunt them ...

The plight of the orcas has caught the attention of government leaders after a mother orca was spotted carrying her dead baby for nine days in a row; Tom Nelson of 710 ESPN’s “Outdoor Line” podcast ...

Pinnipeds—a group including seals, sea lions and walruses—are relatively recently derived marine mammals that evolved from terrestrial carnivorans and reentered the marine environment. Their recent ...