Malpelo Island is renowned for the huge concentration of sharks that can be seen at one time and the variety of species that can be found in the area, from the most frequently seen to the rarer varieties—hammerhead, Galapagos, silky, whale, white-tip, black-tip, dusky, and small toothed sand tiger sharks. August is the best time to see schooling Silky sharks. The water temp will be 20-24 degrees Celsius in August (air temp 27-28 degrees) with a thermocline at 25 – 30m. You will need a 5-7 mm wetsuit. The visibility is between 10 and 35 metres.