You can't scream if you can't breathe.

Synopsis - Anaconda (1997) A film crew headed by anthropologist Steve Cale and director Terri Flores journey through a river to find a mysterious Indian tribe and shoot a documentary on them. When they save a guy called Paul Sarone from a sinking boat, he offers to help in their search for the tribe. The mysterious Sarone is actually a snake-hunter looking for legendary anaconda snake, and when Cale is bitten by some tropical insect, Sarone takes over the boat.Synopsis - Anacondas: The Hunt For The Blood Orchid (2004) When a corporate pharmaceutical sponsor is about to pull the plug on research, part-time adventurer Dr. Jack Byron re-awakens their interest with tales of the Borneo black orchid, said to produce a chemical that can keep a cell reproducing indefinitely. When the trip becomes increasingly dangerous, due to floods, capsized boats and gigantic, ill-tempered anacondas, Byron refuses to allow his crew to end the expedition, and resorts to foul play in order to keep them on the trail.