Thursday, October 30, 2008

Stingray – The Deadly Water Creature

Stingrays are commonly found in the shallow coastal waters of temperate seas. They spend the Stingray – The Deadly Water Creaturemajority of their time inactive, partially buried in sand, often moving only with the sway of the tide. The stingray's coloration commonly reflects the seafloor's shading, camouflaging it from predatory sharks and larger rays. Their flattened bodies are composed of pectoral fins joined to their head and trunk with an infamous tail trailing behind.

While the stingray's eyes peer out from its dorsal side, its mouth, nostrils, and gill slits are situated on its underbelly. Its eyes are therefore not thought by scientists to play a considerable role in hunting. Like its shark relatives, the stingray is outfitted with electrical sensors called ampullae of Lorenzini. Located around the stingray's mouth, these organs sense the natural electrical charges of potential prey. Many rays have jaw teeth to enable them to crush mollusks such as clams, oysters, and mussels.

When they are inclined to move, most stingrays swim by undulating their bodies like a wave; others flap their sides like wings. The tail may also be used to maneuver in the water, but its primary purpose is protection.

The stingray's spine, or barb, can be ominously fashioned with serrated edges and a sharp point. The underside may produce venom, which can be fatal to humans, and which can remain deadly even after the stingray's death. In Greek mythology, Odysseus, the great king of Ithaca, was killed when his son, Telegonus, struck him using a spear tipped with the spine of a stingray.via

Other picture of stingray.


Wednesday, October 22, 2008

Picasso Triggerfish

Picasso Triggerfish
This Picasso triggerfish is also known as the Picasso TriggerfishLagoon or Blackbar triggerfish, or more generically, hu-mu hu-mu (referring to all triggerfishes). It is a colorful relative of puffers, porcupinefishes, boxfishes, and filefishes-- all members of the order Tetraodontiformes.

Triggerfish are found in tropical waters around the world, including the Mediterranean Sea and the Atlantic, Pacific, and Indian Oceans. The Triggerfish Family Balistidae contains about 30 species, with at least nine of these to be known from the Hawaiian area.

Triggerfish are tough and sleek, favoring shallow waters of the reef. Their tough skin and fused teeth make them capable of successfully attacking spiny sea urchins to get to the soft flesh. They also eat crabs, mollusks, worms, other fish, algae and are even known to nip at the tips of hard corals. This species only grows to about nine to ten inches (about 25 cm) but some others, such as the Titan triggerfish, may grow to 30 inches (75 cm). They are found in many areas of the Pacific from Hawaii to the Maldives, and even the southeast and east central Atlantic and the Red Sea.

The Picasso Trigger is a magnificent and very popular aquarium species that is easily recognized by its creamy grayish-tan and white colored body splashed with many distinctive bright blue and yellow fine-line, and golden, black and white wide-band type markings.

Other pictures of triggerfish.

Picasso TriggerfishPicasso Triggerfish
Picasso TriggerfishPicasso Triggerfish

Wednesday, October 1, 2008

Lionfish – A Venomous Marine Fish

Lionfich – A Venomous Marine Fish

The lionfish is native to the tropical Indo-Pacific Lionfich – A Venomous Marine Fishregion of the world, but various species can be found worldwide. Due to a recent introduction, the lionfish has recently been spotted in the warmer coral regions of the Eastern Atlantic Ocean and Caribbean Sea. Lionfish are an invasive species in the Atlantic Ocean and the Caribbean Sea regions. Successful breeding of the lionfish in captivity has not been looked upon.

The common lionfish generally reaches a size of 30-35cm. Smaller lionfish are typically the size of a tennis ball (not including fins). There are many types of lionfish that vary in size.

The venom of the lionfish, delivered via an array of up to 18 needle-like dorsal fins, is purely defensive. It relies on camouflage and lightning-fast reflexes to capture prey, mainly fish and shrimp. A sting from a lionfish is extremely painful to humans and can cause nausea and breathing difficulties, but is rarely fatal.

Lionfish, also called turkey fish, dragon fish and scorpion fish, are native to the reefs and rocky crevices of the Indo-Pacific, although they've found their way to warm ocean habitats worldwide.

Other picture of Lionfish.

Atlantic LionfishCommon Lionfish
Common LionfishRed Volitans Lionfish