Has anyone seen the series on Discovery Channel called "River Monsters"
Yikes, tonight is fresh water pirahnas(sp). The guy was talking about fresh water dolphins that travel up the Amazon River over a 1000 miles from the oceans to feed on the pirahnas. It was odd, the dolphins had some sonar type bulge on the front of the head which helps them locate prey in the murky waters. I have never seen a dolphin look like this before.
Yikes, tonight is fresh water pirahnas(sp). The guy was talking about fresh water dolphins that travel up the Amazon River over a 1000 miles from the oceans to feed on the pirahnas. It was odd, the dolphins had some sonar type bulge on the front of the head which helps them locate prey in the murky waters. I have never seen a dolphin look like this before.