Scraping barnacles off a cruise ship (the game)

So, I saw one of those hull-cleaner POV videos and wondered what it would feel like to scrape barnacles off a ship, so I made a prototype. You dive under a cruise ship, scrape barnacles, sell them, upgrade your gear, and repeat until you clean the whole ship!

Playable in the browser, 100% free!

What do you think? :) Could this be something fun?