Turns out America's lobster fisheries depend much more on the American market than on trade with China ...

"Americans spend more than twice as much on seafood in restaurants as they do at home."

https://www.washingtonpost.com/business/2020/04/08/commercial-fishing-coronavirus/

I know this isn't the conventional wisdom on the topic, but I think the evidence suggests China's lobster tariffs had only a modest impact.

There is (usually) lots of demand in North America for lobster ...

The 2018 stories about the impact of the tariffs on Maine's lobster industry often left out one critical thing: there was a straight forward work around to the tariffs.

Canada exports more lobster to China, and the US exports more lobster to Canada. https://www.cfr.org/blog/how-effective-have-chinas-agricultural-and-seafood-tariffs-been

And in 2019, even with fewer exports to China, U.S. lobsters were in short supply because of a small harvest.

Fortunately, the U.S. had a back up source of lobster supply just to the North. Imports from Canada surged last year