Eastern Spinner Dolphin Pictures

 
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Eastern Spinner Dolphin Photos - Behaviors and Characteristics of This Social Dolphin

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The Eastern spinner dolphin, Stenella longirostris orientalis, a subspecies of the spinner dolphin, inhabits the Eastern Pacific Ocean, off the coast of Mexico and Central America. It has been subject to a massive decline in numbers due to indiscriminate capture in purse-seine nets used to catch yellowfin tuna. The subspecies is estimated to have declined by 65% or more since the 1960s.

The Eastern spinner dolphin is 1.65-1.8 m (65-71 in) in length and weighs about 61 kg (134 lbs). Like all spinner dolphins, it has a longer, narrower beak than most dolphin species. It feeds in deep water at night on fish and squid, and unlike other spinner dolphins, is apt to stay in deep water by day, hundreds of kilometers from shore. its range is tropical, from 24 degrees N off Baja California to 10 degrees S off Peru.

Spinner dolphins get their name from their propensity to leap high out of the water and spin on their axis, sending a spray of water in all directions. The reason for the spinning is not clear, but it may be to shake off remoras or other parasites, to communicate with other pod members, or it may be just for fun.

Spinner dolphins are very social dolphins, traveling in large pods. The Eastern subspecies has been observed in pods of nearly 1,000 animals. Because they often swim over yellowfin tuna, factory fishing vessels use the spinners to target their catch. Unfortunately, the dolphins get captured along with the tuna, and massive numbers are exterminated in a single haul. Controls have been put in place to make tuna fishing "dolphin safe," and it is likely that dolphin capture has been reduced. However, the population of Eastern spinner dolphins has not appeared to rebound, and is still considered severely depleted by the NOAA. The IUCN Red List has no separate status listing for this subspecies, and the species as a whole, Stenella longirostris, is listed as Data Deficient.

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Picture of an atlantic whitesided  dolphin leaping Picture of an eastern spinner dolphin Picture of an eastern spinner dolphin leaping Picture of an eastern spinner dolphin leaping

Picture of an eastern spinner dolphin, Stenella longirostris orientalis, leaping, east tropical Pacific

Picture #: 010924

Stock photo of eastern spinner dolphin, Stenella longirostris orientalis, east tropical Pacific

Picture #: 092204

Image of an eastern spinner dolphin, Stenella longirostris orientalis, leaping, east tropical Pacific

Picture #: 092203

Photo of eastern spinner dolphin, Stenella longirostris orientalis, leaping, east tropical Pacific

Picture #: 010707

Picture of an atlantic whitesided  dolphin leaping Picture of an eastern spinner dolphin Picture of an eastern spinner dolphin leaping  

Picture of an eastern spinner dolphin, Stenella longirostris orientalis, leaping, east tropical Pacific

Picture #: 010709

Stock photo of eastern spinner dolphin, Stenella longirostris orientalis, east tropical Pacific

Picture #: 092205

Image of an eastern spinner dolphin, Stenella longirostris orientalis, leaping, Mexico, Pacific

Picture #: 002826

 

 

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