1. Spinner dolphins grow up to 7 feet (2.1 m) long and weigh up to 170 pounds (77 kg). A robust estimate for the population size of spinner dolphins is only available for the Hawaiʻi Island stock, which is estimated to be around 600 animals. Fun Facts About Spinner Dolphins. The Clymene dolphin was first formally described by John Edward Grayin 1846, although, unusually, he did not assign it its current name until four years later, in 1850. The Kauaʻi/Niʻihau stock is estimated to be around 600 animals and Oʻahu/4-Islands stock is estimated to be around 300 animals. They are generally limited to latitudes between 40°S and 40°N. 2. According to the IUCN Red List, the total population size of the Spinner dolphin is unknown for today, but there are estimates for specific populations in following areas: in the northern Gulf of Mexico - 11,971 animals; in Hawaiian waters - 3,351 individuals; in the southern part of the Sulu Sea and north-eastern Malaysian waters - 4,000 dolphins; in the southeastern Sulu Sea - 31,000 animals; and finally, the … The body size, shape, and color patterns of the various forms differ according to geographical location. They have also been contaminated by pollutants such as DDT and PCBs. Spin… Their social structure varies considerably amongst the different forms of spinner dolphins. Spinners in general all share common characteristics: their bodies are slender, their beaks are long and thin (except for the Atlantic short-snouted spinner) and their flippers are small and pointed at the tips. However, continued study is needed to determine the direction of population trends and the conservation status of this species. In 1981, Perrin et al. Spinner dolphins can live for 20 years. 3. Spinner dolphins, as with other species affected by ETP tuna purse-seine fishing, are managed nationally by the coastal countries and internationally by the IATTC. When the purse seine fishery first began around 1960, dolphins (not just spinners) trapped as bycatch were killed—a number estimated at around six million. The process killed probably half of all eastern spinner dolphins. From then on, until a reassessment in 1981, the Clymene dolphin was regarded as a subspecies of the spinner dolphin (Stenella longirostris). Others live in stable pods for many years. Until this time, because Clymenes are relatively remote and were regarded as very similar to the more accessible spinners, they … Their coloring is in shades of dark gray, light gray, and white; most forms have white bellies. Tens of thousands of spinner dolphins, mostly eastern and white-bellied varieties, were killed in the 30 years after purse seine fishing for tuna began in the 1950s. Spinner dolphin pods range in size from fewer than fifty to thousands. What do spinner dolphins eat? Both of these estimates lack data from the stocks' full ranges.
Spinner dolphins are found in the Pacific, Atlantic and Indian Oceans, as well as the Persian Gulf and Red Sea. 1. They are mostly found in deep offshore waters, although they can be observed around oceanic islands or other coastlines where there is deep water near to the coast (such as Central America and Mexico, the Hawaiian Islands, Tawian and the Philippines)3,4. Some populations have fluid arrangements where dolphin groups join up and separate from time to time.
asserted the Clymene's existence as separate species. The IATTC has imposed annual stock mortality limit…

Bat Hearing Range, Bethesda Streetery Map, How To Get Notification Bubbles On Android, Twelve A Dozen Math, Doom Praetor Suit Costume For Sale, Jd Product Number, Juegos Online, Is U Roy Still Alive, Bmw E34 540i, When Did Prisoners Get The Right To Vote In Canada, Ndp Cape Breton, Popular Jewelry Brands 2019, Edgewater 320cc Price, Gia Certified Moldavite, Rogaine For Men Reviews, Kool G Rap It's A Shame Lyrics, Dysfunctional Societies How Equality Makes Societies Stronger, Event Management Website, Las Vegas Stadium Authority Jobs, French Pastry Fillings, Is Grounded Cross Platform Xbox And Ps4, Multiply Asap Rocky Lyrics, Dirty Charades Game Online, The Great Food Truck Race Season 10 Winner, Mba Subjects, Ordem E Progresso, Joint Event Example, Amulet Book 8 Read Online Pdf, Indesign Cmyk Vs Rgb, How Long Does A Chess Game Last, Yoshikage Kira (jojolion), Trendy Earrings 2020, 100 Humans Netflix Hosts, Cloudy Bay Sauvignon Blanc 2019, Yellow Fever Vaccine Type, Cost Of Living Silver Spring, Md, Coercion In Law Of Contract, Besharam Sf Delivery, Citroen C3 4x4, Mark Giordano Contract, Where To See Whales In California, 1965 Flu Epidemic Uk, Institute For Human Rights And Business Jobs, Germantown, Ny, Juegos De Carros Online, Hippo Facts For Kids,