There's some interesting but half-baked speculation that hydrates are responsible for some of the strange happenings reported in the Bermuda Triangle.

The idea is that the deposits will spontaneously burp up an enormous quantity of methane from time to time. This causes the ocean to turn into a foam that's much less dense than water: ships sink like rocks in the stuff.

Apparently it also causes some kind of ionization or static charge in the air that can cause navigation instruments to go haywire.

Again, interesting and very much half-baked.