Heat Map

The Washington Post article shows a heat map: Temperature change, 2014-2018 compared with 1880-1899 From the article:

The entire global ocean is warming, but some parts are changing much faster 
than others - and the hot spot off Uruguay is one of the fastest. It was 
first identified by scientists in 2012, but it is still poorly understood and 
has received virtually no public attention.
What researchers do know is that the hot zone here has driven mass 
die-offs of clams, dangerous ocean heat waves and algal blooms, and 
wide-ranging shifts in Uruguay's fish catch.
The South Atlantic blob is part of a global trend: Around the planet, 
enormous ocean currents are traveling to new locations. As these currents 
relocate, waters are growing warmer. Scientists have found similar hot 
spots along the western stretches of four other oceans - the North 
Atlantic, the North Pacific, the South Pacific, and the Indian.
A Washington Post analysis of multiple temperature data sets found 
numerous locations around the globe that have warmed by at least 
2 degrees Celsius over the past century. That's a number that 
scientists and policymakers have identified as a red line if 
the planet is to avoid catastrophic and irreversible consequences. 
But in regions large and small, that point has already been reached.