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Marine mammals, the largest known animals to have ever existed.
whale, baleen whales, Cetacea, endangered species, baleen, krill, plankton, vertebrates, mammal, animal, biology
Bottlenose dolphins are sea mammals which use ultrasound for orientation.
The largest land mammal on Earth.
The Arctic tern is famous for its long migration route: it flies from the Arctic to the Antarctic and back again each year.
Dogs are the domesticated subspecies of gray wolves.
Subterranean rodents widespread in Central- and Eastern Europe.
Moles are small subterranean mammals with modified, spade-like forelegs.
Otters are semi-aquatic predatory mammals.
Bats use ultrasound to navigate and hunt for prey.
A mammal with features typical of reptiles: it lays eggs and has a cloaca.
Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.
Igloos were the typical dwellings built by Eskimos living in the Arctic zone.