Examples include bottlenose dolphins, seals, sea lions and belugas. Cetaceans such as bowhead whales, gray whales, and belugas can be seen close to shore. Other times they corral the narwhals or belugas before striking. Both meat and blubber (muktuk) are eaten from narwhals, belugas and bowheads. The killer whale hunts in pods and targets belugas and even larger whales. The government of Greenland sets limits for narwhals and belugas. Belugas are among the most vocal cetaceans. Killer whales are able to capture both young and adult belugas. Unlike other cetaceans, the belugas seasonally shed their skin. Visitors can watch shows performed by dolphins, belugas, and sea lions. The success of belugas turned attention to maintaining their relative, the narwhal, in captivity. A large number of belugas were used from 1975 on, the first being dolphins. In captivity, mothering behavior among belugas depends on the individual. The bears swipe at the belugas and drag them onto the ice to eat them. Studies on captive animals show they seek frequent physical contact with other belugas.