Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Artiodactyla
- Family
- Delphinidae
- Genus
- Lagenorhynchus
Habitat
Hourglass dolphins inhabit the cold, deep waters of the Southern Ocean, primarily in subantarctic regions south of 45°S, often far from land in pelagic environments. They prefer areas with strong currents and abundant krill, avoiding coastal zones and ice-covered seas.
Diet
Hourglass dolphins primarily feed on small fish such as lanternfish and myctophids, as well as squid and krill, which they hunt in deep waters using echolocation. They typically forage at night when prey is more accessible near the surface, diving to depths of up to 200 meters.
Behavior
Hourglass dolphins are highly social, forming pods of 1 to 50 individuals that travel together and exhibit playful behaviors like leaping and bow-riding on ships. They are active both day and night, showing strong swimming capabilities and coordinated group hunting strategies, but they are not particularly territorial.
Conservation Status
The IUCN status of the Hourglass dolphin is Least Concern, with a stable population trend, though they face threats from bycatch in fishing nets and potential impacts from climate change in the Southern Ocean.