Skyfish is a flying organism, flying at speeds up to 1,000 miles per hour. This speed made skyfish undetectable to the naked human eyes. Appearing form a cave 1300 feet straight down, so deep it would hold the entire Empire State Building. They only found out there’s this thing in 1994, when some cliff jumpers with parachutes jumped down and filmed their jump. While the jumpers are descending, they still didn’t see anything, but when they viewed their film later, they found that there are many white flying things, which they didn’t see during their jump.