Kind of raises the question how is Megatron retreived from the bottom of the Laurentian abyss (should have made it Challenger Deep 6.3 miles)? Considering presumably the autobots would have agreed it was a good idea to dump Megatron's body there as it would be irretrievable if not destroyed due to the ~4 tons per sq.inch of pressure
Pressure = 4.25 tons per sq inch @ 18,000ft
[18000ft.]/[2.31 ft./1.2 psi]=9531 psi
[9531 psi]/[2200] = 4.25 tons per sq inch
The Japanese Shinkai can dive to beyond the depth of the Laurentian abyss (18,000ft) at 21,000ft; then again the Neureus HROV supposedly can reach the bottom of the Challenger Deep so there must be cybertronians who can withstand that pressure and sub zero temperature - which would make the Autobots not to mention the US military pretty stupid.
So perhaps Bay will suprise everyone and the Seacons will make an appearance and form the combiner Piranacon! or maybe we just get Submaurader

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