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