Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Artiodactyla
- Family
- Delphinidae
- Genus
- Stenella
- Species
- Stenella longirostris
Habitat
They primarily inhabit tropical and subtropical waters of the eastern Pacific Ocean, often in offshore areas near Central America such as Costa Rica and Panama. These dolphins prefer deep oceanic waters but can be found around islands or over continental shelves. They are commonly seen in waters warmer than 25°C.
Diet
Central American spinner dolphins mainly feed on small fish like anchovies and sardines, as well as squid and shrimp. They hunt in groups using echolocation, typically at night when prey rises to the surface. Feeding occurs in coordinated pods, allowing them to corral and capture prey efficiently.
Behavior
These dolphins live in large, dynamic pods of 50 to several hundred individuals, exhibiting highly social behaviors like playful leaping and spinning out of the water. They are diurnal, active during the day for feeding and socializing, and rest in tight groups at night. Spinner dolphins are known for their acrobatic displays, which may serve purposes like communication or removing parasites.
Conservation Status
The species Stenella longirostris is listed as Least Concern by the IUCN, but the Central American subspecies faces threats from bycatch in fisheries and habitat degradation. Population trends are declining due to these pressures, prompting ongoing conservation efforts in the eastern Pacific.