Sharks keep the food web in balance, as they are incredibly efficient eaters. They often go after the slow, old and sick fish, which keeps the population healthy and by removing the sick and weak, they also prevent the spread of disease. As sharks are at the top of the chain, by removing them, it causes the entire structure to collapse. For example, in the sea off the Mid Atlantic, shark populations were destroyed. As a result of this, Cownose Rays, a former shark prey, grew out of control. The rays depleted the scallops, ending a 100 year old scallop fishery. We often forget how sharks affect the bottom of the chain too. Sharks in fact keep sea grass beds and vital habitats healthy by regulating the behaviour of prey species and prevent them from overgrazing vital habitats. Sharks are a critical component in an ecosystem that provides 1/3 of our world with food, produces more oxygen than all the rainforests combined, removes half of the atmosphere’s carbon dioxide (greenhouse gas) and controls out planet’s temperature and weather.
The Importance Of Sharks
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