The eels live in little crevices and so on. The monk seals root around for food in different little crevices. The climate changes, the eels start to live in the other crevices, monk seal runs into eel.
"Dude, I got an idea, we are *totally* going to be internet famous."
So it's partially climate change, partially internet.
Maybe the seals exhale through their noses as they approach the surface, and since the ocean temperatures have risen a fraction of a degree they are opening their nostrils a few dozen centimeters early during the ascent, just as they pass the eels. The eels, confused by the whole "celsius/centigrade" thing accidentally swim into the seal noses.
Or the two creatures weren't in the same environment until global warming killed the coral or something and now they're in the same biome and haven't learned how to avoid each other yet.
What's really strange is that CNN wrote a science article that doesn't include the words "climate", "global", "temperature", "warm", or "greenhouse". Usually we don't have to connect things to climate change on our own.