It’s believed that sharks have good eyesight, especially in low light conditions due to a reflective layer in their eyes called the tapetum lucidum. This reflective layer is found mostly in pelagic, open ocean species that can be in deep, dimly lit water, like this blue shark here. Sharks can however struggle more to see in murky or muddy waters as the murk can block light & reduce contrast. It’s always best to avoid swimming in murky waters to avoid mistaken identity appearing as prey to a shark. Sharks are very good at seeing what we are majority of the time, but avoiding appearing like prey is part of our job when entering their home, the ocean. On this dive a wall of green water came in so for safety we decided to exit the water just after I filmed a quick video! When you’re at the beach avoid swimming near river mouths, after heavy rainfall, and near harbor mouths so you’re not swimming in waters that are cloudy & may have a fishy scent. 🦈
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