"Thanks, we are compiling all such theories and will share them with our sponsors!"

"Very old school. When we started building ABE, none of us were really sure what an AUV was. But in science you use what you have. ABE had been out of service, we had been using our Sentry vehicle instead. But Sentry leaves on another expedition in a…"

"ABE was very old school. We started building it in 1990. It had lots of failsafe mechanisms to return it to the surface, but none of those could withstand a glass sphere implosion. We tested them many times over the years, in fact ABE had many…"

"sorry folks, ABE sleeps with the fishes (or more likely, deep sea microbes). We are nearly certain it suffered a complete collapse of all its glass buoyancy spheres (1.8 miles of ocean pressure can do that). You can find more details on our web…"