HOW TO USE THIS BOOK Tab shows the mammal category appears here The mammal's common name Fun Facts give interesting information about mammals Sidebars provide additional information about the topic 6
The mammal's scientific name appears here This paragraph gives information about the mammal How to Spot features give information about the mammal's size range habitat and diet Images show the mammal 7
MARINE MAMMALS NARWHAL MONODON MONOCEROS Narwhals have a single tusk which is actually a tooth It grows out of the upper left jaw of male narwhals in a counterclockwise spiral The tusks can grow to more than 10 feet 3 m long Only very rarely will adult females grow a tusk Sometimes a narwhal grows two MARINE MAMMALS Marine mammals live all or most of their lives in or near the ocean They depend on the ocean for their survival In addition these mammals have a thick layer of blubber to help them keep warm Marine mammals are found all over the world in a variety of habitats HOW TO SPOT Size 13 to 16 feet 4 to 5 m long 2,200 to 4,000 pounds 1,000 to 1,800 kg Range Arctic Ocean and north of the Arctic Circle Habitat Depends on the season They can be found in the deep ocean ice free coastal areas and densely packed ice Diet Greenland halibut and other fish squid and crustaceans 8
BELUGA DELPHINAPTERUS LEUCAS Beluga whales have all white skin and a melon shaped head Belugas are highly social creatures and travel in large pods They are very vocal too using a variety of clicks whistles chirps and squawks for communicating mating and hunting HOW TO SPOT Size 13 to 16 feet 4 to 5 m long up to 3,500 pounds 1,600 kg Range Arctic and subarctic waters Habitat Shallow coastal waters of the Arctic seas and in deep waters Diet A variety of fish crustaceans and mollusks FUN FACT Both narwhals and belugas use echolocation to hunt in the ocean 9
