Sunday, November 28, 2010

The fastest and the slowest in the sea.

     Sailfish are a very well-known species of fish (you've probably heard of them, and maybe even seen one mounted) because of their popularity among sport fishermen. They live in  the warmer areas of all the oceans of the world and can also be found at the Similan islands. I have often seen them jumping at the surface while I'm on the dive boat. They are blue to gray in color and have a distinctive large dorsal fin known as a sail, which often stretches the entire length of the back.They eat flying fish and squid, tunas, mackerels, jacks and other fish that swim near the ocean’s surface.
     Generally, sailfish do not grow to more than 3 m in length and rarely weigh over 90 kg.It's the fastest fish in the ocean and can reach speeds of 68 miles (110 kilometers) per hour. Their large size and spirited fight make them a favorite among trophy fishers
      Sea horse is the world's slowest fish. It travels .001 miles per hour. It would take the fish about an hour to swim only five feet. There are nearly 50 species of seahorse, mainly found in shallow tropical and temperate waters throughout the world. They prefer to live in sheltered areas such as sea grass  beds, coral reefs, or mangroves. These fish form territories, with males staying in about 1 square meter of their habitat while females range about one hundred times that area. That's why we can see the sea horse at the same spot around Richelieu Rock.
     Seahorses swim upright, another characteristic that is not shared by their close pipe fish relatives, which swim horizontally. Seahorses have a coronet  on their head, which is distinct to each individual, much like a human fingerprint. They swim very poorly by using a dorsal fin, which they rapidly flutter and pectoral fins, located behind their eyes, which they use to steer. Seahorses have no caudal fin. Since they are poor swimmers, they are most likely to be found resting, with their prehensile tails wound around a stationary object. They have long snouts, which they use to suck up food, and eyes that can move independently of each other, much like a chameleon. Seahorses eat small shrimp, tiny fish, crustaceans and plankton.

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