5. Male sharks often bite the females when mating, so females have much thicker skin. Red Tail Sharks and Bala Sharks. Sharks do not have bones. While researchers are unclear how sharks interpret color, they have determined sharks can discern contrast and color. For example, sharks that prey in deep waters have eyes designed to see bioluminescence. FALSE: Sharks must turn on their side to bite. Biting into a meal is enough to lose a tooth. Like many other sharks, they can be trained, and quickly. The retina of a great white shark is divided into distinct areas to see in low light or daylight. Tests have found the repellent effective on three species: the Caribbean reef, blacknose and lemon sharks. Usually, bones produce red blood cells, but in sharks, it’s the spleen and other organs that produce them. Sharks use their gills to filter oxygen from the water. When selecting tank mates, look for those fish that dwell in the middle and upper levels of the aquarium. You also want to pick fish that can defend themselves and have a calm but strong personality. No. It is actually these vibrations, rather than any blood in the water, that attracts sharks most strongly. Studies are needed on other species … Their teeth fall out fairly easily without roots. Red muscle works by breaking down the fat in the shark’s body. It has a good blood supply and helps the shark swim for long periods of time. Sharks have the rows of teeth because their teeth don't have roots like ours, something to do with being cartilage fish and having no bones. Enabling sharks to make short fast sprints when catching prey or escaping danger. Sharks are easily taught a simple action. Remember sharks lose about 20,000-30,000 teeth on average in a lifetime. But red bone marrow isn't the only site where red blood cells are produced and in bony fish and cartilaginous fish that don't have bones like sharks and rays, the main places where red blood cells are made are in the spleen and in the front section of the kidneys. Sharks do not have to be on their side or back when feeding; they can bite from any angle. The dramatic scene involved a lot of thrashing around from the shark and happened just feet from shocked spectators. 8. 1. Hemoglobin, an iron-containing protein found in the blood of other animals—including humans—serves the same oxygen-transporting function but turns blood red. 4. 5. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues— the clear gristly stuff that your ears and nose tip are made of.This category also includes rays, sawfish, and skates. Sharks have red blood cells. They do have very well developed sensory organs that can smell blood (any blood) over a long distance. 7. 6. TRUE: Sharks can be trained. The shark was swimming around in the shallow waters before it attacked the seal and red blood could be seen spurting into the ocean. Sharks have 2 types of muscle - red and white. Sharks have … White muscle works by using energy from the breakdown of glycogen (sugars). A shark’s jaw is not attached to the skull. You should also avoid any similar looking fish, i.e. They do not show interest for sharks' blood over any other kind, though.

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