Ok. Being in the bottom of the Philippines, I have no great knowledge of eco conservation groups, zealots or not.
Back to the topic......... Our city here is called the Tuna Capital of the Philippines as we ship out 30 metric tons a day, both fresh and in cans. At the fishport, I see an occasional shark, dolphin, manta and everything else aside from the great volume of tuna, swordfish and marlin. They are occasional not because they are not caught but because they are illegal to offload here. So they are caught but off loaded somewhere else or just thrown away.
I know this product will help immensely if it works. I also hope they can make one for dolphins. All the canned tuna we ship out has to have a dolphin friendly logo on it and the European buyers send an inspection group every so often to inspect the tuna.