Cleaners, Predators and Freeloaders

Viasat Nature/Crime Pe 04.01.2013 klo 20.00

Korostus Korostus
Fish have evolved extraordinary ways of seeing and hearing, both to find a meal and avoid being one. They've also perfected a repertoire for camouflaging themselves, even in open water. Most remarkably, some have learned to make themselves indispensable to fish that would otherwise eat them.