Heath Jens Laetari, 28, vanished while free diving off the Florida Keys on September 14, 2006. An experienced marine biologist and vice president of dive operations for Dynasty Marine Associates, Laetari was last seen entering the water on a free dive that does not use scuba gear. A safety diver reported seeing him head toward the surface, but when that safety diver returned to the boat Laetari was gone and did not resurface.

The U.S. Coast Guard conducted a three-day search with no trace found, and Laetari is presumed lost at sea. He had married his wife, Summer, just months earlier in May 2006. His mother said he had been having trouble with contact lenses that day and had planned to stay on the boat before choosing to free dive; a coworker served as safety diver in his usual role.

A memorial service was held in Wichita, Kansas. Anyone who was on the boat that day or saw activity off the Monroe County coast on September 14, 2006, is asked to come forward with information.