Thank you for thinking of our oceans Albert. Your invention would be really useful because of how deep it can go in the ocean, it's good that it can be both controlled and work alone to help cleanse the water. A claw would be a great way to grab and remove harmful plastic that is polluting our oceans, I think you would definitely please the sea life and people like you and me who really care about our oceans. Well done for labelling your drawing clearly too, keep inventing!