Taken off the coast of Mexico's Holbox Island by amateur photographer Sandra Critelli, this breathtaking picture captures the migration of thousands of rays as they follow the clockwise current from Mexico's Yucatan peninsula to western Florida.

Measuring up to 6ft 6in across, poisonous golden cow-nose rays migrate in groups - or 'fevers' - of up to 10,000 as they glide their way silently towards their summer feeding grounds.

These cow-nose rays (Rhinoptera bonasus) have distinctive, highdomed heads, giving them a curiously bovine appearance.

But even equipped with this powerful poisonous stinger, cow-nose stingrays are shy and non-threatening in large 'fevers'. Even when isolated, they will attack only when cornered or threatened.

Unlike other stingrays, they rarely rest on the seabed (where unsuspecting humans can step on them) and prefer to be on the move.

They migrate long distances, and can be found as far south as the Caribbean and as far north as New England.

They use their extended pectoral fins to swim, and often turn upside down, curling their fin tips above the surface of the water - leaving terrified swimmers convinced that they have seen a shark. :)

Their flexible fins also come in handy when rustling up food. By flapping them rapidly over the seabed, they stir up sand and reveal crabs, shellfish and oysters, which they then feed on using their powerful, grinding teeth.

Their particular fondness for shellfish has made them public enemy number one with oyster fishermen.

But despite this, their numbers are exploding, thanks in part to rising sea temperatures. They mate every winter, and females produce a litter of five to ten young.

- shared by Swee Fun.

Space may be the final frontier, but scientists who recently discovered a hidden forest in Mozambique show the uncharted can still be under our noses. BirdLife were part of a team of scientists who used Google Earth to identify a remote patch of pristine forest. An expedition to the site discovered new species of butterfly and snake, along with seven Globally Threatened birds.

The team were browsing Google Earth – freely available software providing global satellite photography – to search for potential wildlife hotspots. A nearby road provided the first glimpses of a wooded mountain topped by bare rock. However, only by using Google Earth could the scientists observe the extent of woodland on the other side of the peak. This was later discovered to be the locally known, but unmapped, Mount Mabu.

A camera is attached to an elephant's trunk to capture those amazing jungle views.

Downer said he came up with the idea three years ago when his team started filming the tigers.

He noticed how gently the forest elephants carried firewood to their camp and wondered if they'd be as delicate with a camera.

"And they were," he enthused. "Elephants do not see tigers as a threat, and tigers are comfortable with elephants. So we had the perfect team."

Along the way, images of other animals were captured by chance - or when the otherwise camera-shy creatures investigated the equipment.

Somewhat related:

New Caledonian Crows Find Two Tools Better Than One (Comment: Tiny “Crow-Cams” Capture Tool Use in Wild Birds).

A Sumatran rhinoceros has been photographed in peninsular Malaysia in the first sighting for more than a decade, raising hopes the animal can avoid extinction, a report said Sunday.

The report did not reveal where the rhino was snapped, but said the photo was taken in a wildlife corridor targeted by the Wildlife and National Parks Department which also spotted elephants, sun bears and the bison-like gaur.

"We're going back to areas where the rhinos were once recorded, looking for more signs and taking samples," said Siti Hawa Yatim, head of the department's biodiversity conservation division.

World Wildlife Fund Malaysia announced earlier this year that it had captured video footage of the extremely rare Borneo sub-species of the critically-endangered Sumatran rhino. The footage, taken in a forest in Malaysia's Sabah state on Borneo island, showed a rhino eating, peering through jungle foliage and sniffing the automatic video camera equipment used to shoot it.

The Bornean sub-species is the rarest of all rhinos, distinguished from other Sumatran rhinos by its relatively small size, small teeth and distinctive shaped head.

WWF says scientists estimate there are only between 25 and 50 of the Bornean sub-species left.

SOS Rhino.

Related:

Palm oil puts squeeze on Asia’s endangered orangutan.

Amur Leopard Near Extinction.

Beautiful photos in black & white 8)

Nick Brandt's first book of photographs, "On This Earth", was published in October 2005, by Chronicle Books.

They fly 50 miles per hour. Go years without touching land. Predict the weather. Mate for life. And they're among the world's most endangered birds. Can albatrosses be saved?

Scofield, of New Zealand's Canterbury Museum and co-author of Albatrosses, Petrels and Shearwaters of the World, has been studying albatrosses for more than 20 years. To research these birds is to commit oneself to months at a time on the isolated, storm-lashed but utterly spectacular specks of land on which they breed.

All but 2 of the 21 albatross species recognized by the International Union for the Conservation of Nature are described as vulnerable, endangered or, in the case of the Amsterdam and Chatham albatrosses, critically endangered. The scientists hope that the data they gather may save some species from extinction.

Scofield said. He and Moniz were planning to stay three weeks on the Pyramid (a storm-swept rock in New Zealand's Chatham Islands), and they hoped to deploy the popsicle-size GPS logger—tracking devices on a dozen breeding adults to track their movements at sea.

Albatrosses are masters of soaring flight, able to glide over vast tracts of ocean without flapping their wings. So fully have they adapted to their oceanic existence that they spend the first six or more years of their long lives (which last upwards of 50 years) without ever touching land.

Albatrosses can plunge into only the top few feet of the ocean, for squid and fish. The lengthy albatross "chickhood" is an adaptation to a patchy food supply: a slow-maturing chick needs food less often than a fast-maturing one. (Similarly, the prolonged adolescence—around 12 years in wandering albatrosses—is an extended education during which birds prospect the oceans, learning where and when to find food.) The chick's nutritional needs cannot be met by a single parent. Mate selection, therefore, is a critical decision, and is all about choosing a partner that can bring home the squid.

In Buller's albatrosses the search for a partner takes several years. It begins when adolescent birds are in their second year ashore, at about age 8. They spend time with potential mates in groups known as gams, the albatross equivalent of singles bars. In their third year ashore, males stake a claim to a nest site and females shop around, inspecting the various territory-holding males. "Females do the choosing, and their main criterion seems to be the number of days a male can spend ashore—presumably a sign of foraging ability," says Stahl.

Pairs finally form in the fourth year ashore. Albatross fidelity is legendary; in southern Buller's albatrosses, only 4 percent will choose new partners. In the fifth year, a pair may make its first breeding attempt. Breeding is a two-stage affair. "Females have to reach a sufficiently fat state to trigger the breeding feeling and return to the colony," says Paul Sagar of New Zealand's National Institute of Water and Atmospheric Research. "When they are back, the local food supply determines whether or not an egg is produced."

Because it takes so long for the birds to produce a chick, albatross populations are keenly vulnerable to threats on their breeding islands.

Yet the most pernicious threats to albatrosses today are not to chicks but to adult birds. This is not just because of the efficiency of modern fishing practices but because fishing equipment—hooks, nets and trawl wires—inflict a heavy toll of injury and death. John Croxall, a seabird scientist with the British Antarctic Survey says, knowledge of the birds' distribution at sea and their foraging patterns is "critical to their conservation."

GPS loggers can give a bird's position to within a few yards. Some loggers also have temperature sensors. By attaching them to the legs of their study birds, scientists can tell when the birds are flying and when they are resting or feeding on the sea, because the water is generally cooler than the air.

Individuals of some species circumnavigate the globe, covering 500 miles a day at sustained speeds of 50 miles per hour. And then they somehow find their way home—even when home is an outpost in the ocean like the Pyramid, not much bigger than an aircraft carrier. Because the birds maintain their course day and night, in cloudy weather and clear, scientists believe they use some kind of magnetic reckoning to fix their position relative to the earth's magnetic field.

The birds also seem able to predict the weather. Southern Buller's albatrosses were found to fly northwest if a low-pressure system, which produces westerly winds, was imminent, and northeast if an easterly wind-producing high-pressure system prevailed. The birds typically chose their direction 24 hours prior to the arrival of the system, suggesting they can respond to barometric cues.

There are no reliable figures for the number of birds killed per year through contact with commercial fishing operations, but estimates for the Southern Ocean are in the tens of thousands. However, there is some evidence to suggest that fisheries may benefit albatross populations: a ready supply of discarded fish reduces competition for food between and within albatross species and provides an alternative food source to predatory birds such as skua, which often attack albatross chicks.

In albatrosses—long-lived, slow-maturing species that produce a single chick every one to two years—the long-term negative impact of adult death far outweighs the short-term benefit of chick survival. It may take three, four or even five successful chick rearings to compensate for the death of just one parent, says Stahl. He calculates that "even small increases in adult mortality can wipe out the benefit of tons of discards fed to chicks."

One albatross population that has unashamedly been propped up is the colony of endangered northern royal albatrosses at Taiaroa Head, near the city of Dunedin, on New Zealand's South Island. Taiaroa Head is one of the only places in the world where a visitor can get close to great albatrosses. The colony is tiny, with only 140 individuals, and the breeding effort is managed assiduously—"lovingly" would not be too strong a word.

Royal albatross chicks are nest-bound for nine months. Providing meals for these chicks is so demanding that the parents take a year off before breeding again. Lyndon Perriman, the senior ranger, described to me some of the ingenious techniques used to maximize reproductive success. ..