Subsequent encounters with the Gill-man claim the lives of Lucas's crew members, before the Creature is captured and locked in a cage aboard the "Rita". It escapes during the night, attacking Edwin, who was guarding it. Kay smashes the Creature with a lantern, driving it off, but Edwin is severely injured. Following this incident, David decides they should return to civilization. Mark, obsessed with capturing (or killing) the Creature, objects. As the "Rita" tries to leave, they find the Gill-man has blocked the lagoon's entrance with fallen logs. While the others attempt to remove the logs, Mark is mauled to death while trying to capture the Creature single-handed underwater. The Gill-man then abducts Kay and takes her to its cavern lair. David, Lucas, and Carl chase after the Creature, and Kay is ultimately rescued. The Creature is riddled with bullets before retreating to the lagoon, where its body sinks into the watery depths.