In a place where the midday sun is right above you will naturally seek shadow, yes? Don't try this at the Seychelles without a second look up in the treetops: coconuts?
If you do make the mistake of not looking above and skip off your towel for a cooling swim, you may find when you return, a newly fallen coconut cratering the towel where your head had rested 5 minutes earlier...
This has in fact happened to someone who parked at Port Launay Marine National Park near La Plaine because of overhanging coconuts, and sure enough, a minute after they had changed parking spot the first nut smashed to the ground with a resounding "thump!". Right where they had first parked. Watch it!