Mammals can maintain a constant body temperature.

The Arctic Ocean is a cold and beautiful sea.

The narwhal is a type of whale that lives in the Arctic Ocean.

The narwhal is a unique marine mammal that lives in the Arctic Ocean.

This forest is a habitation for many animals.

Many types of animals inhabit this forest.

His work is instantly recognizable by its unique style.

His unique talent quickly attracted attention.

We learned about the protection of the main sea.

He is dreaming of a trip to the North Pole.