What attracts sharks the most?
Results are mostly inconclusive, but some general principles have been advanced: Sound: Sound, rather than sight or smell, seems to be a shark’s primary cue for moving into an area. Certain types of irregular sounds—like those made by a swimmer in trouble or a damaged fish—seem to attract sharks from great distances. Sharks are not particularly attracted to human blood, contrary to what is shown in movies. It’s not actually just blood, but any bodily fluid that might attract sharks. However, they can’t sniff out one drop of blood from miles away.Color: Some scientific experiments indicate that sharks can distinguish light colors from dark, and that they may even be able to distinguish colors. Yellow, white, and silver seem to attract sharks. Many divers think that clothing, fins, and tanks should be painted in dull colors to avoid shark attacks.
What scares a shark away?
ESDs aim to overwhelm a shark’s electro-sensory system. They emit electrical pulses (each one does so in a different way) that are supposed to repel the shark. So far, ESDs have been the most effective type of personal shark repellent. Shark repellent technologies include magnetic shark repellent, electropositive shark repellents, electric repellents, and semiochemicals. Shark repellents can be used to protect people from sharks by driving the sharks away from areas where they are likely to harm human beings.