One of my favorite dives in San Diego, the Missile Tower.

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The structure was purposefully sunk in 1992 as part of the California Fish & Game Artificial Reef Program. It was originally a Trident Missile test launching platform. The Trident missile is a submarine-launched ballistic missile armed with thermonuclear warheads and launched from nuclear-powered submarines. It was developed by Lockheed Missiles and Space Corporation in the 1970s.

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Covered in white metridium anenomes, the Missile Tower currently rests on its side in 49 metres of water close to the Mexican border.