here is how cramming a glorified pasta strainer in a fishing net saves the lives of sea turtles. The fishing industry used to make a really big dent in certain turtle populations. Now a Turtle Exclusion of Device of TED, is required in shrimping nets here in the US and they reduce accidental turtle catches by 97%. Now do you do it? Well, you basically just fit a grid of metal bars in the neck of your shrimping net. The shrimp are small enough to pass in between them and get caught in the back of the net. But the turtles are too big- they bump into the bars and get shunted out through a flap in the net. Its literally a reverse colander! keep the stuff that passes through, not the stuff that get's caught And as a bonus, it doesn't just exclude turtles, it also saves other large organisms, from getting caught. So just by using the simple device, the fishing industry can now avoid hurting sea turtles!