In the news.
https://www.bbc.com/news/science-environment-51553381
https://www.stuff.co.nz/environment/119627032/endangered-blue-whale-population-making-a-comeback
“To think that in a period of 40 or 50 years, I only had records for two sightings of blue whales around South Georgia. Since 2007, there have been maybe a couple more isolated sightings. So to go from basically nothing to 55 in one year is astonishing.”
“Conservation efforts to protect whale populations around the world are working, with research showing several endangered species have thrived in recent years.”
In news from October last year.
https://www.bbc.com/news/science-environment-50040887
Humpback whale numbers in the South West Atlantic have risen from “a few hundred” to “just short of 25,000 individuals”.