While on a boating trip on the ocean with Tina away from the others, the shark appears out of the ocean and knocks him overboard. Before he can swim to the boat again, he is attacked and brutally eaten up by the shark while hanging onto the side of the boat, becoming the shark's fifth victim. His death horrified Tina and she jumps into the water and the shark ate her.
Eddie's sailboat, a Marshall Sandpiper 15 catboat, is called "Tina's Joy". Universal bought two of these boats for the film. The coaming (railing) around the cockpit of the catboat is damaged as Eddie desperately clings to the boat while the sharks wrenches him under the water.