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Only three phocid species—all of the monk seals—are tropical and they are all either highly endangered or, in two cases, extinct.
The fur seals are also found in the tropics, but their absolute abundance is low.
In many cases, mother seals must be separated from their foraging grounds to take care of their offspring: if they can locate on ice, they can still feed and not abandon the pups, but on land, in groups called rookeries, they must limit their lactation periods so they can go without eating for a period of four or five days.
Today, all pinnipeds are protected by the Marine Mammal Protection Act (MMPA) in the U.
From the AGU and “anything’s a climate proxy, as long as it’s dead” department.
When diving or swimming, they store oxygen in their blood and muscles and dive for longer periods than humans can.
Like cetaceans, they conserve oxygen when diving by restricting blood flow to only vital organs and slowing their heart rates by about 50 percent to 80 percent.
Two species, the Japanese sea lion ( Seals are found from polar to tropical waters.