Join Yahoo Answers and get 100 points today. Sharks are divided into two groups: those that lay eggs (oviparous), and those that give live birth (viviparous). Ask question + 100. Instead have a yes or no answer ready for any potential combination of offers from the sharks… It's integral to wildlife conservation, providing the bedrock for our understanding of sharks. 0 0. Shark Senses. True sharks are classified in the superorder selachimorpha and there are more than 440 species alive today. However some bottom-dwelling sharks have adaptations for breathing even while they are still on the sea floor. Once it is out there, is no taking it back. Do sharks have bones? So don't leave the tank and let your sharks collude behind your back! I was just wondering if some sharks have a placenta or some connection between the mother and the developing young. ... yes they do. Get answers by asking now. Yes, thankfully. P. See how great a forest a little fire kindles! Removed comment. The tongue is amazing when it comes to running. 0. 5. Some sharks need to hunt in … It seems that these molluscs use their drill-like radula (tongue) to bore into the eggcase and feed on the energy-rich yolk. Known as a mermaid’s purse, the egg sac of oviparous sharks … One of … No. Scientists have found out the true size of the prehistoric giant shark, Megalodon. Yes, some sharks need to swim continuously to stay alive. Sharks are fascinating creatures, especially when it comes to discussing their reproduction and development. Many young sharks spend their first few months or years in the safety of a nursery until they’ve grown big enough to venture out into the open sea. 1 Corinthians 12:9 to another faith by the same Spirit, to another gifts of healing by that one Spirit, 1 Corinthians 12:10 to another the working of miracles, to another prophecy, to another distinguishing between spirits, to another speaking in various tongues, and to still another the interpretation of tongues. James 3:5-7 (NKJV) 5 Even so the tongue is a little member and boasts great things. Shark eggs are telolecithal and this concentration of yolk means they represent an attractive source of fats and protein to potential predators. 6 And the tongue is a fire, a world of [unrighteousness]iniquity. Still have questions? If they stop swimming, no more water flow means no more oxygen, so breathing stops. Sharks are apex predators that have no natural enemies; however, humans are predators of sharks, with an estimated 30 to 100 million sharks are killed every year by fisherman. Sharks belong to the elasmobranch group of fish that have lighter, more flexible cartilage in their skeleton, instead of bone. - Credit: Marc Baldwin. Trending questions. ... Do sharks have tongues? Many shark species have brains as complex as mammals, which enables them to process a wide range of senses. We all need to learn to control it, the tongue. Do sharks have placentas? Do sharks have any predators/threats? Taxonomy is a field of science that involves classifying and naming species. This has caused many species of sharks to become vulnerable to endangerment. Megalodon young may have done the same. Answer Save. Join. Some sharks also have a mechanism on their caudal fins called a horizontal keel, which reduces turbulence and allows them to swim faster. What the large upper lobe does for the shark is to ensure a combination of being able to cruise at slow speeds, observing their surrounds and scouting for prey, and suddenly to burst into a powerful surge when in pursuit of darting prey. A new species of shark, skate or ray is identified approximately every two weeks. 3 Answers. Sharks obtain oxygen for breathing from the water that flows over their gills. Swim faster it seems that these molluscs use their drill-like radula ( tongue ) to bore into the and. Field of science that involves classifying and naming species caused many species of sharks to become vulnerable to.! 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