What do people do at night on the beach with flashlights?
Sand Crabs are your answer! Sand Crabs are usually only out at night and they are ghostly white and can only be spotted with flashlights. They are quick little creatures as well.
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At night, you'll see people taking flashlights to the beach. They're out there because you can spot crabs making their way across the sand. However, the light from your flashlight may confuse sea turtles who think it's moonlight, causing them to head in the wrong direction.
We humans can witness this natural phenomenon when there is lots of bioluminescence in the water, usually from an algae bloom of plankton. The bioluminescent sea will glow when it's disturbed by a wave breaking or a splash in the water at night. Algae bloom sea sparkle events are caused by calm and warm sea conditions.
Parasailing, scuba diving, snorkelling, water surfing, kayaking, swimming, we can go on and on about the fun things to do at the beach for adults or even for kids in terms of water activities. Choose the sport(s) you like and go enjoy the thrill it brings along.