The aesthetic nicknames of whales include whale comforting the sea, whale map, whale reflecting loneliness, whale falling, blue whale, whale liking the sea, whale reflecting the island, insomnia whale, deer and whale and the sea, blue whale reflecting the island, whale eating girl, whale casting seabirds, whale Geng, whale watching in the blue ocean, blue whale harbor town and cool dreams, a whale, blue whale boy and the sea, cool town in a clear summer.

Cetacea is a traditional taxon under the phylum Mammalia, including about 90 species of fish-like, naked-skinned aquatic mammals and their early extinct relatives, collectively referred to as cetaceans or cetaceans. Traditionally, the big ones are called whales and the small ones are called dolphins. Most of them live in shallow water, and a few species live in fresh water.