According to Marine Life at About.com, walruses are primarily located in sub-Arctic and Arctic waters in the Northern Hemisphere. The Atlantic walrus subspecies lives mainly in the water, on rocky coasts, and on ice near Greenland and northeast Canada. The Pacific subspecies calls United States and Russian waters its home. Walruses' depend heavily on sea ice, which they use for giving birth, nursing, shelter, moulting and travel.Know More
As of 2014, there is concern among experts about sea ice melting due to rising global temperatures, which is causing walruses to retreat to coastal areas. The crowded conditions, lack of food and resources and increased predators are a threat to the walruses' way of living, according to Marine Life at About.com.
Walruses follow a carnivorous diet, feeding mainly on creatures on the ocean floor, including clams, mussels, fish, seals and dead whales. They use their whiskers to sense prey, quickly sucking food into their mouths. Marine Life notes that they have two large tusks, and 16 additional teeth.
The average lifespan of a wild walrus is between 20 and 30 years. When it is not breeding season, walruses form gatherings on rocky beach areas, numbering in the several tens of thousands. Male walruses reach sexual maturity by age 7, but they may not mate until they are 15 years old, explains Marine Life.Learn more about Marine Mammals
Whales can be found in all of the world's oceans, but the specific location depends on the species of whale. Sperm whales can be found in all of the oceans of the world, for example, with male populations found primarily in the equator and polar regions, and young whales and females located mainly in temperate regions. Blue whales live off the coast of California, migrating to Costa Rica and Mexico.Full Answer >
Orcas, or killer whales live in oceans all over the world. They can be found from the Arctic ocean down to the Southern Ocean around Antarctica. However, they prefer colder waters near the coasts.Full Answer >
Manatees live in oceans and rivers. Their range spans the tropical Atlantic region. The three species of manatee live along the east coast of the Americas and in the Caribbean, in the Amazon river basin, and in western Africa, respectively.Full Answer >
Forty species of dolphins live in varied climates, from the arctic, which is inhabited by killer whales, to the Caribbean, which is preferred by bottlenose dolphins. Even the Amazon River basin is home to several dolphins, including the endangered finless porpoise, according to Whale Facts.Full Answer >