Right off the bat, the claim that the Atlantic Ocean is the hottest it has ever been is very well backed up by this article. The article was posted by a very reliable government source, the National Oceanic and Atmospheric Administration, which is a part of the US Department of Commerce. Government organizations like this one are required to fact-check all of the information they release to the public and are almost always trustworthy sources. All of the data displayed in the article was their own, and with a quick Google search, I was able to find other articles that supported the same claim by other reputable sources such as the UN Environment Program, Yale Climate Connections, and more. I was also able to easily research the author and learn about her education and background in climate research, which qualify her to speak on this topic. The claim presented in this article is undeniably true.