Oil formed from the remains of ancient marine organisms, such as plankton and algae, that accumulated on the seabed millions of years ago. Over time, layers of sediment buried these organic materials, subjecting them to heat and pressure, which transformed them into hydrocarbons. Geological processes, including tectonic movements, then trapped these hydrocarbons in porous rock formations beneath the seabed, where they accumulate until extracted through drilling.
Oil is commonly formed in rock or in sealed pockets under the seabed and it is from the Latin for 'rock oil' that the word 'Petroleum' is derived
we get fuel from under its because the ground it self have oil and god the only one who knows
International Seabed Authority
Oil drilling often occurs on the seabed, that is, the very bottom of the ocean.
East Timor
Drilling for oil on land is usually cheaper than drilling under the seabed due to several factors. On land, the infrastructure costs are lower, as there is no need for specialized equipment, platforms, or pipelines. Additionally, the depth and pressure of the reservoirs under the seabed can be much higher, requiring more complex and expensive drilling techniques. The harsh marine environment also leads to increased operational and maintenance costs for offshore drilling.
The tunnel is 50.5 km long (31.4 miles). of which 37.9 km. (23.5 miles) is below the seabed.
dead sea creatures on the seabed being compressed by debris after millions of years of decay oil may be extracted
Fuel is extracted from the ground or seabed through drilling wells into underground reservoirs where oil or natural gas is trapped. Specialized equipment is used to pump the fuel to the surface where it can then be processed and refined for use. Offshore drilling platforms are also used to extract fuel from beneath the seabed.
The Gulf of Mexico seabed seeps quite a bit of oil, anyway; the planet will surely have more difficulty recovering from the dispersants.
shelly seabed
It is unpredictable, however statistics show that a tsunami as result is incredibly unlikely.