Cleaning up the ocean is definitely a good thing.
However is suspect it is their "focus" to distract from their denial of climate change.
Well, we can fix it, Crepitus. Let's recall that if Trump sends people to G20, he might go along for the ride and give a pitch people worldwide will want to participate in and fund. That way, every country can say they did their part to revive the sea, which will die at the rate it's getting plasticized. We must fix the problem. Remember, all the oceans have one or two places where monster collections are, and some whale groups have reduced the size of their herds beyond all measure due to the loss of krill-sized creatures of the seas. They don't do well in reduced sunlight areas, and in the Pacific, it's the size of Texas going on the size of Alaska, not to mention the mess down in the Indian Ocean between India and Australia and along the Coast of East Africa.

Here are a few more little guys we are protecting: