'Invisibility' wetsuit promises protection in land of killer sharks (LA Times)

[petronius]

2. I was looking that up a few weeks ago - after it suddenly struck me that one

of my surfboards is mostly red on the bottom. I think the most likely case is that they can't see colors; it's the shapes and outlines, light-dark variations, and contrast with the background that matters. So no matter what the actual color, being darkish and seal-shaped might be an error...