Narwhal

The narwhal is an Arctic toothed whale known for the long, spiral tusk carried by many males. This tusk is an elongated tooth rather than a horn. Narwhals lack a dorsal fin and use seasonally ice-covered waters while feeding on fish and squid. They travel in groups and can dive deeply to find prey. Tusk development varies, with some females also having a visible tusk. Seasonal movements follow changes in sea ice and access between coastal summer habitats and offshore wintering areas.