Like many startups, Poseidon Aerospace began with a niche obsession. For friends-turned-cofounders David Zagaynov, Parker Tenney, and Isaac Baumstark, that fixation was the ekranoplan — a Soviet ...

Beached on the western shores of the Caspian Sea, it looks like a colossal aquatic beast -- a bizarre creation more at home in the deep than above the waves. It certainly doesn't look like something ...

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 ...

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 ...