Discovery Channel: Velocity--Extreme Fishing Challenge | Lifestyle | Learnist Actor and fisherman Robson Green has spent the last four years traveling and seeking out extreme fishing. Follow this show for some outdoor adventure!
The wonders of evolution: Tongue-eating louse (Cymothoa exigua). This parasite enters the fish's mouth (Lutjanus sp.), clings to the tongue's base and extracts all the blood until the tongue atrophies.. Then it replaces the fish's tongue by attaching its own body to the muscles of the tongue stub, and starts to feed on what the host eats; the fish can live normally, and there are even studies around the benefits that he could receive from this parasite. There are no risks to humans.