It is vessel strikes and gear entanglements, but it's also climate change, so the population basically grew from fewer than 200 animals to almost 500 by 2010. Then we started to see a decline that has coincided with increasing temperatures in the Gulf of Maine that affected their plankton and meant that the animals had to go look for food somewhere else. Some of them did that in the Gulf of St. Lawrence, where there weren't any protection measures in place because we didn't anticipate the whales moving to that area. We had no means to do that.
It's common for a wild animal to also go through a reduced reproduction at times when there's food stress. I think that's gone on, so right now, yes, the population decreased quite sharply, especially from 2017 up until the year before last. However, now it looks like it's levelling out, and a bit of time will tell.
Again, though, the whales have to take care of the reproduction side, but we have to take care of the vessel strikes and the gear entanglements.