In 1967, U.S. spy satellites captured an impossible image over the Caspian Sea: a 325-foot-long beast skimming the waves at ...

After lying dormant for more than three decades, the Caspian Sea Monster has been on the move again. One of the most eye-catching flying machines ever built, it's completing what could be its final ...

Poseidon Aerospace emerges from stealth with its uncrewed seal glider dubbed the Seagull. Inspired by the Soviet Caspian Sea Monster, Seagull uses low-altitude flight to reduce drag. Poseidon plans to ...