The whale shark has unique denticles (tooth-like scales structures), each with an extremely strong central keel, no lateral keels, and a tri-lobed rear margin. It would appear that the denticles are hydrodynamically important in its pelagic lifestyle.
Bring light ponchos for rain gear. These can be purchased from most camping stores. Many stadiums also carry a light poncho to sell to fans of local football teams. These work great as well. They are small and light and easy to carry anywhere you go as a rain cloud can come in no time and dump a monsoon on your head.