Arnoux’s Beaked Whale

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About Arnoux’s Beaked Whale:

They are a rare cetacean species.
- A cetacean is a member of the family of large aquatic mammals such as whales, dolphins, and porpoises.
Scientific Name: Berardius arnuxii
Arnoux’s Beaked Whales are a gregarious species generally found in groups of 6-10, but larger groups of 80 individuals have been recorded.
Distribution:
- They are found only in the Southern Hemisphere.
- Their distribution is circumpolar in deep, cool temperate and subpolar waters, generally south of 40°S to the edge of the Antarctic ice shelf (approximately 78°S).
Features:
- They are known for brilliant diving abilities and can measure up to around 30 feet long.
- Females are thought to be slightly larger than the males.
- The body is spindle-shaped and resembles dolphins in appearance.
- The dorsal fin is small, triangular, slightly hooked, and positioned well back on the body.
- They are predominantly dark brown in color with paler coloring on their head and ventral sides (undersides), which also have white patches.
- Like other whale species, males show extensive scarring, particularly around their dorsal fins.
- They are often called Southern four-toothed Whales because of their four teeth found in their lower jaws that are visible even when their mouth is closed.
Conservation Status:
- IUCN Red List: Least Concern

Q1: What are gregarious species?

Gregarious species are animals that are naturally inclined to live, travel, or gather in groups rather than being solitary. This social behavior offers several advantages, including protection from predators, better foraging opportunities, and enhanced mating success.

Source: Rare sea animals known for hour-long dives spotted in Antarctica waters