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Spinner Dolphin


Scientific Name:
Stenella longirostris
Length:
2.0 m (6.6 ft)
Weight:
59 - 77 kg (130 - 170 lbs)
Status:
data deficient
Prey:
Small deep-ocean fish, shrimp and squid

Physical characteristics

The color varies depending on region and subspecies. They all have long and slender beaks.

Behavioral characterization

Known to leap and spin on body axis above water, sometimes up to 14 leaps in a row.

Distribution

Deep oean, but coastal in Hawaii. All tropical and subtropical oceans.

Population size

613,000 for the eastern stock

Predators

Sharks

Migration/Dispersal patterns

Unknown

Social system/Group size

Seen in large groups with mother/calf bonds being persistent. Individuals move freely between the groups. Sometimes found in mixed groups with humpback or bottlenose dolphins.

Major threats

Entanglement in fishing gear (mainly in the tuna drift-net fishery) and tourists interrupting their rest and sleep time (Hawaii) are the biggest threats.

Research efforts

N/A

Fun fact

One leap can have up to four body revolutions.