To start: where are all the trinketfin? And how can I be environmentally irresponsible?
For the trinketfin: At the top of the map, there’s a terminal which has a sea shanty. That sea shanty contains all of the locations the trinketfin can be found in!
For being environmentally irresponsible, try using the bucket! You can put things in it, and you can empty it wherever… what would be irresponsible to empty into where?