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This is scientific Americans 60 Second Science. I'm Jason Goldman. There's a lot of cash crawling on the sea floor. American lobsters bring in more money than any other U.S.

fishery, a record $670 million in 2016, mostly through Maine and Massachusetts.

The fishery relies on traditional lobster harvest techniques.

A series of traps is dropped to the ocean floor with a long rope attached to a floating buoy.

During peak fishing season there's over 900,000 vertical lines right in the middle of right whale habitat.

Graduate student Hannah Myers from the University of Alaska Fairbanks College of Fisheries and

Ocean Sciences.

Those vertical lines entangle and kill endangered sea turtles and multiple whale species, including the North Atlantic right whales.

Only about 400 individuals remain, and recent analyses show that the species won't survive if humans kill an average of just one whale each year.

Some estimates indicate that lobstering gear kills more than three whales each year on average.

Management problems surrounding the North Atlantic right whale

and entanglements are pretty significant and have been really challenging to move forward

and a large part of that is due to expected negative economic impact in the lobster fishery.

But right whale protections don't have to mean lobster losses.

Canada's lobster harvest operates with fewer traps and a shorter six month long season.

The US lobster lobster seven and a half times as much as the Canadian fishery to catch the same amount and Canadians are catching almost four times more lobster

per trap.

They're putting less effort into it and spending less on fuel and equipment, but they're still

gathering nearly the same amount of lobster overall.

...