LifeSome starfish-like animals see without eyes by changing body colour Some brittlestars, close relatives of starfish and sea urchins, can work out where light is coming from by changing the colour of their bodies 51¶¯Âþ
LifePredators may make prey get smart and grow more brain cells Predators are a problem for Trinidad’s killifish: in streams where the problem is worst the killifish grow more brain cells, perhaps to help evade the hunters 51¶¯Âþ