Monodon

Narwhal Monodon monoceros
Photo: пресс-служба ПАО "Газпром нефть" · CC BY-SA 4.0
A whale without a dorsal fin that lives in Arctic seas. Males commonly develop a long tusk from a tooth.
Narwhal Monodon monoceros
Photo: пресс-служба ПАО "Газпром нефть" · CC BY-SA 4.0
A whale without a dorsal fin that lives in Arctic seas. Males commonly develop a long tusk from a tooth.