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Wednesday, January 20, 2010

Palau Islands Pictures Info and Photos

The Seven Underwater Wonders of the World : Information about Palau Islands with Pictures and Photos.

> There are more than 250 islands in the Republic of Palau—though about 70 percent of its people live in the capital city of Koror. Tourists drive the nation's economy, most are drawn by the world class diving in their coastal waters. By Travel.Nationalgeographic

Palau Islands Picture
Palau Islands Photo
Wonderful Palau Islands Photo
World Wonder Palau Islands Picture


The Seven Underwater Wonders of the World About Palau : The warm waters of Palau, a small archipelago in the Pacific Ocean, hold perhaps the richest and most biologically diverse coral reefs on the planet. In this "cradle of diversity," marine biologists have recorded 700 species of corals and 1,500 species of fish.

Palau's coral reefs began to grow millions of years ago when coral polyps colonized submerged volcanic mountains. The tiny polyps produced a material that cemented them in place. Side by side, they built hard, external skeletons around their soft bodies, and when they died, other corals built skeletons on top of them. Geologic forces eventually raised the coral topped mountains above the sea, and all the exposed corals died. In time, new colonies built more reefs on the islands undersea slopes.

Today, divers swimming over the coral gardens of Ngemelis Island are moved by nature's artistry and creativity. The top of this reef, just a few feet below the surface, resembles wild flowers swaying in the breeze. Here, soft coral trees and bushes seem to have been painted in stunning shades of green, red, yellow, and orange.

Among the many fish species fluttering around gracefully are yellow butterflyfish, blue-headed wrasses, and emperor angelfish-black masked and striped. Not so graceful, though, is the mango-size puffer, a fish that sucks in water when startled and inflates its body to the size of a football. Sharp spikes stick out in all directions and are quite a deterrent to potential predators. Another cumbersome swimmer is the pear-sized trunkfish, whose tough, trunklike body is difficult for predators to chew.

Nestled among the Ngemelis corals are giant clams. These two- or three-foot-long creatures, depicted in early movies as being able to grab divers' feet, feed harmlessly on plankton-not divers. And poking ever so slightly out of cracks in the corals are green and red brittle stars. Related to sea stars, these animals grow arms that break off easily if bitten by predators or touched by scuba divers. Brittle stars hide until sundown, but at night they crawl out, spread their arms, and feed on plankton.

Sometimes the best way to observe fish is to find a sandy patch, settle down, and wait, letting them get accustomed to you. And a good technique for finding a particular kind of fish is to look from right to left, rather than left to right-the usual way in which people view things. Looking in this manner slows down the viewing process and increases the odds of sighting an animal.

Not difficult to spot are watermelon-size cuttlefish hovering in the water. Related to the octopus and squid, these members of the cephalopod group can change their colors, patterns, and shapes so that they sometimes look like floating plants or free-swimming octopuses, their arms tickling unseen objects. Another master at deception is the crocodilefish. A lie-in-wait predator, this three-foot-long fish has an uncanny resemblance to its reptilian namesake.

One of the greatest underwater shows on earth can be seen at Blue Corner, a part of the archipelago named for the deep blue quality of its water. Here, currents strong enough to rip the mask from a diver's face bring in a healthy supply of plankton, a food source that attracts unicornfish, tangs, and other plankton-eaters. In turn, these fish attract huge schools of predators, including sharks and jacks. The school of jacks can number 300 or 400 and be so dense that it nearly blocks the sunlight, creating the effect of an underwater eclipse. Blue Corner also attracts manta rays and eagle rays. With wingspans of several feet, these large plankton-feeders have few predators and can feed leisurely without having to worry about the ever present sharks patrolling the reef.

At Blue Corner, the currents are so fast that a diver's encounter with a pelagic fish may last only a few minutes before he or she is whisked into the open ocean. Some divers overcome the time constraints of current diving by using a reef hook, a three-foot-long line with a hook at both ends. One hook attaches to a scuba vest and the other to a nook or cranny in the reef. The hook extends the dive, but in the process of setting, adjusting, and releasing it, a diver damages the fragile corals. Healthy coral gardens are found in many other areas of Palau, but at Blue Corner major areas of coral are now barren white patches of rock. This little corner of the world shows what can happen when underwater wonders are overwhelmed by people's desire to see them at any cost.

Among Palau's other attractions are 80 marine lakes. Jellyfish lake, with its extraordinary jellyfish population, is the most visited. Like the others, it is dark green, has poor visibility, and is as warm as bathwater. Each day, jellyfish slowly follow the sun's path across the lake, soaking up sunlight for the life-supporting algae in their tissues. Because they haven't needed to protect themselves from predators, these jellyfish have lost the ability to sting. Their lake was sealed off from the open ocean eons ago, and jellyfish-eaters, such as turtles, were locked out. Without the threat of getting stung, today's underwater explorers can swim freely among yellow polka-dotted jellyfish shimmering harmlessly in the sun. Courtesy By Wonder Club

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