River Monsters It was supposed to be the safest boat in the Amazon, but when Sobral Santos II sank by the remote town of Obidos on the night of September 21st 1981 more than 300 people died. What had laid into the passengers? 2026-04-04 Jeremy Wade looks at dark and deadly creatures - parasites. 2026-04-04 Jeremy Wade takes a look back some of the killer fish he has encountered in the series. 2026-04-04