Orcas, the largest dolphins in the sea, subsist on a diet of fish, seals, sea lions, squid and dolphins, and they also eat porpoises and whales. Also called killer whales, orcas are highly social animals that travel in family groups called pods.Know More
Killer whales are apex predators that feed on prey of all sizes, including the blue whale, the largest animal on Earth. Scientists have observed killer whale pods coordinating attacks on their prey. As highly social animals, killer whales travel in pods that are each led by a matriarch. There are three types of pods to which killer whales can belong: resident, transient and offshore, and each pod type has different prey choices.
Resident pods tend to remain in one area, feeding on local fish populations. Transient pods tend to travel over a larger area than resident pods and prey on a wider selection of animals, including other marine mammals. Offshore pods travel beyond the coastal waters frequented by resident and transient killer whale pods and also prey on a wide selection of marine animals. Offshore killer whales also have a preference for eating sharks, and researchers have discovered that biting into shark skin can contribute to excessive tooth wear.Learn more about Marine Mammals
Sea otters eat mainly slow-moving fish and marine invertebrates, such as crabs, sea urchins, abalones, clams, mussels, snails and octopuses. However, the diet and eating habits of sea otters may vary depending upon the location and season.Full Answer >
Otters are eaten by large predators, such as great white sharks, killer whales, bears, sea lions, eagles and coyotes, depending on their geographical location. Humans also kill sea otters when they use fishing gear that traps the otter or hit the otter with boats.Full Answer >
Although most mammals are terrestrial, many species inhabit the world’s oceans and seas, including seals, otters, whales and dolphins. As air-breathing mammals, these creatures must return to the water's surface often to vent carbon dioxide and acquire more oxygen. Dolphins and whales have blowholes that facilitate this process, while seals and most other marine mammals breathe through their noses after surfacing.Full Answer >
A baby sea lion is called a pup. When born, pups are usually about 2.5 feet long and weigh between 13 and 20 pounds, but can weigh as much as 50 pounds.Full Answer >