Stingrays are highly intelligent and well-adapted animals that inhabit most of the world's oceans. It's nice to see how they move along the seabed. Their flat bodies are perfect for gliding over sand and rocks, searching for buried crustaceans, fish and molluscs. Their wings are used to turn the sand to reveal the animal so it can be fed with straw. Stingrays have holes in their noses filled with a gelatinous substance that senses electric currents to hunt for those hidden or even buried in solid material. The sturgeon's jaws are powerful, with flat teeth that can crush shells to eat the animals hidden inside. The prey is inhaled, crushed and swallowed orally. The sand and shells are discarded and the bull moves on to the next meal. Stingrays also have special breathing devices. Breathe water, but not through your mouth. Behind the eyes are holes through which water can be drawn in, pushed outward towards the tail and outward. This allows the stereo system to breathe even when the body is buried in sand. When the stereos used the camera provided by the emery cloth, the holes and eyes were exposed. Like many marine creatures, special adaptations create protection against predators. Most breeds have 1-3 sharp barbs on their tails. If threatened or captured, the woodpeckers can cause painful wounds. The vertebrae are often separated and left in the wound. While the wound is less lethal, it contains venom that causes pain and reduces blood flow. Stingrays are non-aggressive and rarely attack humans or other animals, but accidental entry into areas occupied by swimmers is a leading cause of fish injury. Sturgeon is a fish and belongs to the shark family. They are cartilaginous, meaning they have no bones. Stingrays have the highest ratio of brain size to body weight of any fish and are considered the most intelligent fish. They show a greater ability to remember, learn and communicate than previously thought. Races are still very mysterious creatures and are not yet fully understood. Understanding their role in the oceans and the health of our planet provides insights that will help us protect them in the future.
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