The rigs and platforms in the North Sea

Both have offshore platforms which drill and extract oil from the sea bed.

Barnacles can grow on oil platforms. The platforms can be beneficial to sea life, as long as there is no oil spill. Once there is an oil spill, then the harm greatly outweighs any benefit.

In the UK most Red Helicopters are owned by the company Bond Offshore Helicopters who provide transport to and from North Sea and Irish Sea oil and gas platforms.

Yes, Scotland both produces and uses fossil fuel oil. There are platforms in the North Sea for drilling rigs for both oil and natural gas.