Sharks can detect tiny amounts of blood. Avoid bright swimsuits and uneven tanning. Contrasts attract sharks. Do not splash a lot, since it attracts sharks. Keep pets out of the water.
Erratic movements attract sharks.
Never try to touch any type of shark. Sneak attacks occur without warning. Often, these attacks are repeated several times. These are the largest species that eat human-size prey, including marine mammals, sea turtles, and large fish. Other species believe to have attacked in this manner, but more rarely, include the hammerhead , short fin mako , oceanic whitetip, Galapagos, and some reef sharks such as the Caribbean .