The blue whale is the world's largest animal known to man, with a blue-gray body. The largest blue whale ever caught was in 1904, near the Falkland Islands in the Atlantic Ocean. This blue whale is 33.5 meters long, weighing 195 tons equivalent to the weight of 35 elephants. Its tongue weighs about 3 tons its heart weighs 700 kilograms, lungs weigh 1,500 kilograms, the total weight of the blood is about 8 tons to 9 tons, and the intestines are half a mile long. Such a large body can only live in the vastness of the ocean.
The blue whale is the Earth's premier beast, on the size of the beast called the "king". The blue whale is also the only Hercules. A large blue whale has a power of up to 1700 horsepower, which can match the power of a locomotive. It can tow a 800-horsepower boat, and even when the boat is upside down, it can still run for hours at a speed of 4 to 7 nautical miles per hour. Blue whales can also swim very fast, up to 15 nautical miles per hour. The blue whale has a flat, broad horizontal tail fin, which is the driving force behind its forward motion and serves as a rudder for up and down elevation. Two flippers, evolved from the forelimbs, keep the body balanced and assist in switching direction, which makes its movements both agile and smooth.
Diving champion ---- sperm whale
The sperm whale is head-heavy and tail-light, like a giant tadpole, with its head taking up a third of its body and looking like a big box. Nostrils are also very special, only the left nostril is open, and is located in the left front above; the right nostril blocked. Therefore, when it exhales, it emits a column of mist at an angle of 45° to the left front. Although the teeth of the sperm whale are very large and more than 20 centimeters long, with 40 to 50 teeth on each side, only the lower jaw has teeth, while the upper jaw is only "stabbed out" by the teeth of the lower jaw of a hole. However, the sperm whale habits and blue whales are very different it is very sharp, prey once it bites will be difficult to get away. Its favorite food is the deep-sea king squid, so "practiced" a good diving skills.
In all cetaceans, the sperm whale's dive is the deepest, up to 2200 meters. Sperm whales have a high economic value, a huge "head box" in a special cetacean wax oil, the past people mistakenly think it is the brain out of the flow, so call it "brain oil" in fact, "brain oil" has nothing to do with the brain. In fact, "brain oil" has nothing to do with the brain. This is a very useful lubricating oil, many precision instruments, such as watches, chronometers and even rockets, are inseparable from it a large sperm whale's head can be loaded with a ton of such oil. The famous ambergris is a foreign substance in the intestines of such whales, which is an excellent aroma-retaining agent, from which the name sperm whale is also derived.
Rampaging Thugs - Killer Whales
The killer whale is also a toothed whale. It is nearly 10 meters long and weighs 7 to 8 tons, and the female is slightly smaller, at 6 to 8 meters.
Killer whales are bold and cunning, and brutal and gluttonous, is the vast ocean "lawless thugs". The English name of the killer whale has the meaning of killing whale murderer. Many people have witnessed killer whales attacking dolphins, sea lions, and large cetaceans at sea.
The killer whale's mouth is very large, the upper and lower jaws each have two dozen 10 centimeters to 13 centimeters long sharp teeth, a big mouth, the sharp teeth exposed, and more show a vicious look. Teeth toward the back of the inner curved, upper and lower jaw teeth interlocked with each other, and the human hand fingers crossed together in the form of similar. This not only makes it difficult for the captured object to escape the tiger's mouth, but also tears and cuts the prey. The killer whale is very recognizable. In the back of its eyes there are two ovoid large white spots, from a distance, like two large eyes; its body side and a piece of white area protruding in the direction of the back, making it unique.
Killer whales are strong, agile, and swim quickly, up to 30 nautical miles per hour. Swimming, the male whale up to 1.8 meters of dorsal fin protruding from the water, quite similar to an ancient weapon - "halberd" upside down on the surface of the shape of the killer whale is therefore another "orca" alias. The killer whale has been nicknamed the "orca" because of this.
Whales with teeth - toothed whales
Toothed whales have a large variation in body shape, the smallest species is only about 1 meter long, the largest is more than 20 meters. The mouth has cone-shaped teeth, but the shape and number of teeth vary greatly from species to species, with the smallest having only one single tooth, and the largest having dozens of teeth, some of which are hidden in the gums and are not exposed, and are therefore one of the most important bases for categorization. There is only 1 external nostril, so only a jet of water can be emitted when breathing. The skull is asymmetrical from side to side. The fins have 5 fingers. The sternum is large. No clavicle. No appendix. Feeds mainly on squid, fish, etc., and some also prey on seabirds, seals, and other large animals such as cetaceans. Toothed cetaceans in the world **** there are 8 families of puffer whales, sperm whales, saber-nosed whales, narwhals, spinner whales, spinner dolphins, porpoises, dolphins and pilot whales, and so on, about 34 genera, 72 species.
The wise man of the sea - dolphin
The dolphin is also a small toothed whale animal.
In the past, it was often said that monkeys are the most intelligent animals in the animal kingdom. But it turns out that dolphins are smarter than monkeys. Some skills, monkeys have to go through hundreds of training to learn, while the dolphin only need twenty times to learn. If an animal's intelligence is measured by the percentage of its brain to its body weight, the dolphin is second only to the human being, while the monkey ranks third.
Dolphins after training, not only can perform a variety of skills, such as top ball, drilling fire ring ...... and in the special training of people, they can act as human assistants, wearing a grabber can dive to the bottom of the sea to salvage items sunk into the seabed, such as experimental rockets, missiles, etc., or to the personnel engaged in underwater operations. Transmission of information and tools, but also military reconnaissance, and even act as a "death squad", carrying explosives and warheads to shock the enemy ship or blow up the enemy underwater missile launchers.