That makes sense. It’s relatively warm; there’s a bunch of seaweed, and the waters are calm.
Edit: Wait, how was this a mystery?
“The 1920–1922 Dana expeditions, led by Johannes Schmidt, determined that the European eel’s breeding sites were in the Sargasso Sea.”
Finish the f2p quests. Talk to people, but look up common scams. See if you like semi-afk gaming. Try out runelite. Join some communities (like this one). Don’t focus on the grind; enjoy the experience.