Are seals asexual?

MATING AND BREEDING Most male and female harbor seals become sexually active at ages three to six or seven years. Adult females usually mate and give birth to one pup every year; the size of a pup can be 1/4 to 1/3 that of the mother.

sealsitters.org - About Harbor Seals

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SENSES

BEHAVIOR

NATURAL PREDATORS

HUMAN IMPACT

in

Harbor seals have a highly developed sense of hearing. Their hearing is almost 14x more acute underwater than on land. Their sense of hearing is important for their protection against predators . Seals in the Pacific Northwest have learned to distinguish the differing communications of the mammal-eating transient killer whales (orcas) and harmless resident, who prefer salmon.Harbor seals’ large, dark eyes are well adapted for underwater vision, but they have poor eyesight on land and appear not to see in color. Their eyes are covered with a protective mucus which coats the eyes underwater and often appears as a wet ring around them when they are onshore. Large, wet rings around the eyes is an indication of well hydrated seal pup.Harbor seals can detect prey by using nerves in their whiskers orthat sense a change in pressure or vibrations in the water. Harbor seals use their acute sense of smell to find a lost pup. Unlike sea lions, harbor seals rarely vocalize on land except during pupping season or when threatened. They often communicate by slapping the water with their flippers. Underwater, however, seals communicate using a series of eerie sounds. View documentary video of waddell seals underwater in Antarctica.Harbor seals spend about half their time on land and half in water. and they are able to sleep in the water for up to 30 minutes.On land, they regulate their body temperature (either warming up on cold days or cooling down on hot ones) by raising rear and/or front flippers, called the. They can often be seen doing similar behavior in shallow water.Although they are able to dive to depths of 650 feet and stay submerged for over 20 minutes, they typically dive to a much shallower depth where their food is located. Their diet consists of many varieties of fish as well as octopus and squid.Harbor seals are usually solitary animals except during breeding season or when hauled out. Once weaned, pups form bonds with other young seals for protection and no longer accompany their mothers. View video of a seal's watery world.The harbor seal’s main predators are orcas, sharks and polar bears. Coyotes, bears, eagles, stellar sea lions and walruses often prey on unprotected or sickly pups.Once widely hunted for their luxurious coat and rich blubber (government sanctioned hunting of seals still takes place in some regions such as Scotland, Norway and Iceland), modern man creates additional risks to all species of seals and their pups. Canada , whose annual harp seal hunt has killed many thousands of defenseless seal pups on the Eastern seaboard, has now proposed a grey seal hunt, in order to sell seal penises to Asian markets Seals often drown by entanglement commercial fishing nets, gillnets in particular. Seals also suffer serious wounds from nets, fishing line and barbs that can lead to infections and death. Additionally, they are sometimes intentionally killed by fishermen who erroneously believe they are responsible for reduced fish stocks caused by overfishing , habitat destruction and pollution. Environmental pollution has created an extreme risk for harbor seals and other marine mammals. Polluted waters lead to low body weight, infections and increased susceptibility to viruses and parasites, often resulting in death.

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What is the most elite Ranger unit?

The 75th Ranger Regiment The 75th Ranger Regiment is the U.S. Army's premier large-scale special operations force, and it is made up of some of the most elite Soldiers in the world.

leadthewayfund.org - US Army Rangers

The 75th Ranger Regiment is the U.S. Army’s premier large-scale special operations force, and it is made up of some of the most elite Soldiers in the world. As the premier light infantry fighting force, Rangers specialize in joint special operations raids and joint forcible entry operations deep inside enemy territory in support of our country’s policies and objectives. The nature of their service leaves their heroism largely unknown but has been rewarded by a grateful nation with over 600 Purple Hearts, 2,000 Bronze Star Medals, 49 Silver Star Medals, and the Medal of Honor. When the 1st and 2nd Ranger Battalions were re-activated in 1974, General Abrams chartered the Battalions to be “the best light infantry unit in the world” and a “standard bearer for the rest of the Army.” After Operation Urgent Fury (Grenada, 1983), the requirement for more Rangers and a better suited command structure resulted in the formation of the 3rd Ranger Battalion and the Regimental Headquarters in 1984. Today, the 75th Ranger Regiment is part of the United States Special Operations Command (USSOCOM). The 75th Ranger Regiment consists of five battalions, stationed at Fort Benning, Georgia, Hunter Army Airfield, Georgia, and Joint Base Lewis McChord in Seattle.