I’m trying to work out if I should go for a swim on the equator as there are many things that could stop me. We thought it would be fun to look at what beasties might lurk beneath the surface. Georgie pulled together this information for me, I’ve commented in a few spots.
Heat from the sun warms the world’s oceans near the Equator. This heat is gradually circulated through the oceans by currents. Since these waters are always being warmed, they maintain high year round temperatures (21° – 30° C, 69.8° – 86° F) and are known as the Tropical Regions of the world’s oceans. Certain sharks, such as the nurse shark , the tiger shark and the bull shark, are only comfortable in these warm waters where food is plentiful, so they remain there year-round without migrating.
Hot tropical waters range from approximately 21° C (69.8° F) on up. The largest numbers of species and the largest populations of sharks live in the tropical region where the water temperature stays consistently warm. Tropical sharks include the huge filter-feeding whale shark, the great hammerhead shark, the nurse shark, the tiger shark, and the bull shark, which is found in both the ocean and in fresh water lakes in the tropics. Certain large species, such as the whale shark, range throughout the tropical region all over the world. Others, such as the nurse shark, are non-migratory and tend to stay in local warm water areas.
Nurse sharks prefer water temperatures between 20°-30°C (68°-86° F). Since they prefer warm temperatures and feed on non-migratory animals such as spiny lobsters, small squid, and mollusks, nurse sharks stay in the same tropical locations all their lives.
THINK I COULD TAKE A NURSE SHARK, THEY LOOK LIKE I’D BE TOO BIG FOR DINNER ANYWAY.
The tiger shark (Galeocerdo cuvier) is a species of requiem shark and the only member of the genus Galeocerdo. Commonly known as the “Sea Tiger”, the tiger shark is a relatively large macro-predator, capable of attaining a length over 5 m (16 ft). It is found in many tropical and temperate waters, and it is especially common around central Pacific islands. Its name derives from the dark stripes down its body which resemble a tiger’s pattern, which fade as the shark matures.The tiger shark is a solitary, mostly nocturnal hunter, and is notable for having the widest food spectrum of all sharks, consuming a variety of prey ranging from crustaceans, fish, seals, birds, squid, turtles, and sea snakes to dolphins and even other smaller sharks. The tiger shark has been known to eat inedible manmade objects that linger in its stomach, and it has a reputation as a “garbage eater”. The tiger shark is considered a near threatened species due to finning and fishing by humans.
THESE GUYS ARE FEROCIOUS, NOT SURE I’D WANT TO SEE ANY STRIPES WHILE OVER THE SIDE, HOWEVER I’M NOT CROSSING CLOSE TO ANY ISLANDS SO THERE IS SOME COMFORT IN THAT. I’M PRETTY SURE I WOULD COME SECOND IN A DUST UP THOUGH.
The bull shark is classified as number three on the list of most dangerous sharks in the world when it comes to attacks on humans. They don’t move very fast but they are certainly able to tackle their prey due to their sheer strength. They are unpredictable and that is what makes them so dangerous. It is believed that bull sharks are responsible for almost all of the different shark attacks out there. Yet other species of sharks are often blamed for it. The person may mistake the look of the shark for some other type. Since the bull shark moves around so much it may be in an area not known for it so they don’t get held responsible for it. Bull sharks are extremely territorial which is why they often do attack people. They do migrate to follow the source of food but if it is plentiful they will remain in a certain area. This is quite unusual for a species of shark to do as most don’t call any particular part of the water home. The bull shark has an array of food that it is happy to consume. They include other sharks, fish, turtles, sting rays, mollusks, and even birds from time to time. They aren’t picky about their diet so they will eat what is readily available. Bull sharks are extremely large both in length and weight. They have a quite demeanour about them. They can be approximately 13 feet in length and up to 1,270 pounds. Females being larger than males. They are gray on the top and white on the bottom. They also feature two dorsal fins, one that is large and one that much smaller than the first.
DON’T LIKE THE SOUND OF THESE GUYS, IT SAYS THEY ARE SLOW BUT IF YOU DON’T SEE HIM UNTIL HE’S 10 FEET AWAY IT IS GAME OVER I THINK. THEY ALSO SEEM TO LIKE BIG FOOD, AS IN PEOPLE SIZE FOOD.
I NEED TO THINK ABOUT THIS!
Editors Note: Click on the photos to get a more clear image of the sharks.