Is it difficult to protect small tuna?

Small tuna fishing: Follow rules to restore resources

It's been a success in the Atlantic Ocean, so I thought for a moment that it could be done in the Pacific Ocean as well.

I wonder if it would be difficult to regulate the Pacific Ocean because there are many island nations that use purse seine fishing in the Atlantic Ocean?

I also think that.

This article first talks about Japan.

In Japan, it's probably the purse seine boats that are catching too many small tuna.

(This is just my personal opinion without proper data, so please excuse me.)

Even if it's difficult, Japan needs to strictly follow the rules in order to be persuasive to other countries.

I guess it's the international standard to say that it doesn't matter and prioritize one's own national interests...