Three species of dolphin reside in the Sound, but they are hiding today.
Among them are three species of thresher shark and the shortfin mako shark.
Three species on the Asian subcontinent are close to extinction after eating animal carcasses containing traces of the anti-inflammatory diclofenac.
BBC: NEWS | Science/Nature | Bird groups hopeful on vultures
The three species most seriously affected by diclofenac are the oriental white-backed vulture (Gyps bengalensis), the long-billed vulture (Gyps indicus) and the slender-billed vulture (Gyps tenuirostris).
BBC: NEWS | Science/Nature | Bird groups hopeful on vultures
The Northern hairy nosed wombat is the largest of all the three species, weighing up to 40kg and measuring about 1m long (the females are slightly heavier than the males).
BBC: Protecting a wombat species that is as fast as Usain Bolt
Two of the top three species he has selected, the black lion tamarin and Hispaniolan solenodon are part of the Jersey based Durrell Wildlife Trust's protection programme.
It seems then that at least two, and possibly three species of Homo were stalking the east-African savannah a little under 2m years ago: habilis, rudolfensis and something as yet unnamed.
Using Australian government data on endangered species, the researchers calculated that 16 threatened mammals would benefit from the presence of dingoes, while the wild dogs would only be detrimental to three species.
Rafael Joglar, a biologist at the University of Puerto Rico, has noted the diminishing nighttime calls in decades of research on the island and not just from the three species believe to have gone extinct.
In all, 44 species of Asian freshwater turtles and tortoises and three species of North American pond turtles were upgraded in the eyes of the convention, meaning that their trade will be more carefully regulated.
One more case from India: ornithologists who want to save three species of vulture (endangered because cattle carcasses are tainted by chemicals) see their best ally as the Parsees, who on religious grounds use vultures to dispose of human corpses.
FORBES: Scenes from the 2010 Montauk Redbone Fishing Tournament
Ozturk and her Turkish colleague, Dr. Ayhan Dede, have been studying the three species of dolphins commonly found in the Bosphorus, a 20-mile long channel which bisects Istanbul, a city of more than 10 million people, and runs from the Black Sea to the Sea of Marmara.
On an unseasonably chilly night in Manhattan a gaggle of businessmen, anglers and fishing guides gathered together for an auction and dinner in the name of saving bonefish, tarpon and permit, three species that haunt the flats and beguile anglers from Florida to the Bahamas to various far-flung Pacific atolls.
In the past 10 years, population losses of more than 95% have been reported in these three raptor species.
BBC: NEWS | Science/Nature | Bird groups hopeful on vultures
The three animal species listed have been dwindling in numbers.
At my restaurant Kin Shop, which focuses on contemporary Thai food, I've started a Monday night crab dinner series, highlighting at least three different species of crab spread over four courses.
They found a combination of six, including three previously unidentified species, did the trick.
"What we found is that three of the species did have lower abundances in locations that were noisier, " Dr Proppe explained.
"This is an incredibly fascinating discovery as there have only been three new dolphin species formally described and recognised since the late 1800s, " Ms Charlton-Robb said.
Other small carnivores caught on camera were the Sunda stink-badger (Mydaus javanensis), and two species of mongoose, the very common Short-tailed mongoose (Herpestes brachyurus) and the Collared mongoose (H. semitorquatus), and all three Bornean otter species, the Smooth-coated otter (Lutrogale perspicillata), Asian small-clawed otter (Aonyx cinereus) and the extremely elusive Hairy-nosed otter, considered to be the world's rarest otter.
BBC: Earth News - Rare Otter civet filmed for first time in Borneo
All five species (three in Asia) were declared endangered or threatened with extinction.
The U.S. Fish and Wildlife Service has banned the importation of Burmese pythons, along with three other exotic snake species and their eggs.
He will be joined by regular presenters Kate Humble and Martin Hughes-Games for the live series, which sees nature's stories unfold over three weeks, as species on the reserve are followed by.
Three factors influence whether a species can adapt to a new habitat - food supply, climate and competition with other species.
Fish species only represent two to three per cent of all living things in the ocean.
Based on a book of the same name, the movie tells the story of three men competing to spot the most species of birds over one year.
Of the 22 species within the Morganza Spillway, three -- the copperhead, cottonmouth and canebrake rattler -- are venomous.
The Procambarus Clarkii species can also burrow up to three feet underground.
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