Monodontidae
- Delphinapterus
- Monodon
- Bohaskaia
- Casatia
- Denebola
- Beluga whale Delphinapterus leucas
Photo: Javier Yaya Tur / CIUDAD DE LAS ARTES Y LAS CIENCIAS from Valencia, España · Javier Yaya Tur (CAC, S. A.) · CC BY 2.0 An Arctic whale that becomes white as it matures. It has a rounded forehead and no dorsal fin.
- Narwhal Monodon monoceros
A whale without a dorsal fin that lives in Arctic seas. Males commonly develop a long tusk from a tooth.
