Whataboutery. Ocean clean ups won’t cool the planet.
The farming, fertilisers, concrete, etc. are all issues, but getting on a plane is still one of the worst things you can do as an individual. Not getting on a plane is something you can easily choose to do. Slow travel baby! Get the train, look out the window, read a book, smash the buffet car, smash the missus, chillax!