A family of Arctic and subarctic whales lacking a true dorsal fin, an adaptation for moving beneath sea ice. Monodontidae includes the narwhal, whose spiraled tusk is an enormously elongated tooth, and the beluga whale.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Connections
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