Calving season ends for North Atlantic right whales as conservationists hope for population recovery

CTV News

2 days ago

A pair of North Atlantic right whales interact at the surface of Cape Cod Bay, March 27, 2023, in Massachusetts.
For the past eight years, the North Atlantic right whale population has been fighting for its life.
In 2017, 17 whales died from a combination of vessel strikes, entanglements, and unknown causes, according to the National Oceanic and Atmospheric Administration (NOAA). They suffered 10 more deaths in 2019.
In nearly a decade, 157 right whales have died or suffered serious injuries or illnesses, prompting the declaration of an unusual mortality event (UME) for the species.
'Understanding and investigating marine mammal UMEs is crucial because they can be indicators of ocean health, giving insight into larger environmental issues which may also have implications for human health,' reads the NOAA website.
The calving season for the North Atlantic right whale recently ended, with the New England Aquarium reporting 11 confirmed mother-calf pairings.
'If you look over averages, 11 is actually the average number born,' said Kim Elmslie, campaign director with Oceana Canada. 'Last year, 20 calves were born and four of those calves are presumed to have died.
'The ideal number to hit is 50 calves, some models say. In 2009 there were 39 calves born, which is still a low number for this species. Every calf is to be celebrated, but we want to see more.'
NOAA estimates there are roughly 370 North Atlantic right whales left; in 2017 that number sat at 431. Fifteen years ago the population rested at 477.
Elmslie notes the raw numbers only tell half the story of the challenge facing the species.
'Of that population that are about 370, only 70 are reproductive females,' she said. 'If that number were to drop below 50, we'd have a crisis for the species.'
Entanglements pose an ever-present threat to right whales, a fact that was hammered home this week as Fisheries and Oceans Canada (DFO) reported an entangled whale that was spotted on the north shore of the St. Lawrence estuary. Oceana Canada said it was the first reported right whale entanglement in Canadian waters this year.
DFO said the whale, which was identified as a juvenile male born in 2021, was first sighted entangled in North Carolina last December.
Due to the ongoing entanglements, Oceana Canada has advocated for ropeless fishing gear to reduce the incidents. Elmslie says there is support from the fishing industry for exploring those kinds of opportunities.
'There are some unique opportunities as we see markets start to shift,' she said. 'It's a very interesting time globally. Canada might be poised in an interesting way to take advantage of these opportunities.'
As the summer rolls along, Oceana Canada and other organizations will be keeping a close eye on the North Atlantic right whale population.
'Every year, everybody holds their breath,' she said.