20090113_aitcho_islands_0061

A Weddell Seal on Aitcho Island in the South Shetlands. Weddell Seals are known for their very deep dives -- which may reach some 700 meters. They can also hold their breath for approximately 80 minutes. Such deep dives involve foraging sessions, as well as searching for cracks in the ice sheets that can lead to new breathing holes. The seals can remain submerged for such long periods of time because of high concentrations of myoglobin in the muscles. The Weddell seal lives further south than any other mammal, inhabiting the waters of McMurdo Sound, 800 miles from the South Pole.. The diet of the Weddell Seal consists of squids, Nototheniidae, as well as Antarctic toothfish.The Weddell Seal's predators include orcas and Leopard Seals. These animals are also killed by man to supply the dog food market. Aitcho Island which is Located at 62˚24˚S 59˚47˚W and at the norhtern entrance to tthe English Strait.