Name:Bearded seal
Alias:Bearded seal
Outline:Carnivora
Family:Pinnipeds Phocidae B.seals
length:2-2.5m
Weight:200-425kg
Life:20-25years
IUCN:LC
Bearded seal has two subspecies and is the seal with the longest beard in the ocean.
Bearded seals generally live alone and rarely board the same iceberg with other individuals. However, small groups of bearded seals can be seen on the ice in spring and early summer. Bearded seals that come onto the ice always face the water and are rarely more than one body length away from the water. Bearded seals are very vigilant. When they are on the ice, they will immediately flee into the sea water even if they feel a little danger. Males can make very loud roars. Most dives are less than 100m deep, and the maximum dive record of adults is close to 300m. The dive record of a few-month-old juvenile exceeds 488m.
Bearded seals mostly move in dispersed groups during migration, and generally do not gather in large groups. Only occasionally can large groups of about 1,000 be seen. In winter, they are generally active in cold waters, and in summer, they gather near estuaries where fish gather. They often move their habitats, and generally only stay in the same place for a few days or weeks, but do not migrate for long distances. In summer, they like to gather near estuaries. [3] Some populations remain in their locations year-round, while others migrate north in the summer with the retreating ice and return south in the late fall and winter with the advancing ice.
Many average-looking, fat people are potential “microphone masters”. Bearded seals are no exception, and they are so good at singing that in the summer, these “baritone singers” use elaborate songs to express love or establish their own territories. These songs, which are composed of several variations of trills, groans, and laments, can spread over a radius of 12 miles (nearly 20 kilometers) and last for 3 minutes.
The global population has not been quantified (Kovacs 2002). An estimated 200,000–250,000 individuals are present in the Sea of Okhotsk, of which 60,000–75,000 are east of Sakhalin Island (1968–1990). An estimated 250,000–300,000 individuals are present in the Bering Sea, of which 83,000–87,000 are present in the western Bering Sea (Fedoseev 2000). Based on 35 years of sampling data, at least 190,000 individuals are present in Canadian waters (Cleator 1996). Angliss and Outlaw (2005) believe that the current population data for the Bering and Chukchi Seas are unreliable. Population data for the Atlantic Ocean (from the Barents to the Chukchi Seas) are unknown (Reijnders et al. 1993).
Listed in the IUCN Red List of Threatened Species: Least Concern (LC), assessed in 2008.
Listed in China's National Key Protected Wildlife List: National Class II Protected Animal (effective December 10, 1988, all species of Pinnipeds*)
Listed in China's National Key Protected Wildlife List, Class II.
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