There are about 380 North Atlantic right whales left on Earth. This winter, 23 of them were brand new [1].
The full accounting of the calving season - the surveys flown, the mothers matched to their calves, the tallies checked between agencies and aquariums - is now in, and it says this was the best season since 2009, the fourth-best ever recorded [1][2]. From mid-November to mid-April, survey teams working the calving grounds off the Southeast coast logged roughly 500 sightings of 129 individual whales, and among them, 23 mother-calf pairs [1]. For a species that some seasons has produced fewer than five calves, 23 is not a statistic. It is a nursery.
The scientists' favorite part is not the count. It is the calendar. A healthy right whale mother calves every three to four years; in the lean recent decades, stressed and underfed whales stretched that to seven, sometimes ten. This season, of the 20 experienced mothers who returned, 13 came back after just four or five years [2]. Amy Warren of the New England Aquarium, which analyzed the returns, said the shorter intervals give 'hope that they may be healthier' [2] - whale for whale, the mothers seem to be recovering enough, fast enough, to do this again sooner.
Then there are the names. Right whale researchers know these animals individually, by callosity patterns and scars and decades of sightings, and this season's roll includes three first-time mothers - two of them ten-year-olds, right on time for a species that matures around then [2]. It also includes two grandmothers of the sea: Juno and Ghost, both over forty, each with at least nine calves across their long lives, both delivering again this winter [2]. A forty-something mother who has been calving since the 1980s and is still at it is the strongest sentence the species knows how to write about itself.
Here are the limits, as plain facts: 23 calves in one season does not reverse a population decline by itself, and the two things that kill right whales - entanglement in fishing gear and strikes from vessels - are still in the water the calves are swimming through right now, on their first migration north [1][2]. The mothers did their part this winter. The rest of the assignment belongs to the rest of us, and it is due every year.
Somewhere off the Atlantic coast tonight, a ten-year-old whale is a mother for the first time and a forty-year-old named Ghost is teaching her ninth calf where the food is. Twenty-three new right whales are learning the ocean. That is the news.
