An underwater ‘motorbike’ called the SubSea Scooter is on sale in Britain for £12,000. It is powered by an electric motor and allows owners to ride underwater for up to two-and-a-half hours at a time.
Electric powertrains require no air intake, and are completely weather-sealed, so many of them are capable of riding along underwater. Here’s a video of a high-powered Russian motocross bike doing just that.
It’s not a motorbike, but I found this cool video of riding a bicycle underwater.
Check out these electric underwater scooters, which are popular in several tourist destinations.
https://www.dailymail.co.uk/sciencetech/article-7124315/Underwater-motorbike-lets-riders-explore-sea.html
This is so wild! These guys tried to run a regular motorcycle underwater!
Here’s another electric motorbike that can work underwater.
https://evcentral.com.au/volcon-grunt-off-road-electric-motorbike-works-underwater/
Check out this Russian electric bike that can be ridden underwater.
https://newatlas.com/motorcycles/milander-sm-250-electric-motorcycle-underwater/