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Mini-subs run silent, run deep

Supposedly can dive, surface like the big ones

Hammacher Schlemmer

Just when we thought we'd found the best pool toy ever with the remote-controlled water cannon, another one comes along to run (or swim) circles around it. The "Remote-Controlled Omnidirectional Submarine" supposedly can "dive and surface like an actual naval submarine," including 360 progressive rolls.

The mini-sub can accomplish these mighty feats with three high-powered motors and can even see where it's going at night with its LED headlamps. Oh well, our cannon can still blow that puny yellow submarine out of the water. Tough luck, Caroline.