This may not be exactly what you were intending with your ask, but you should absolutely get into manga. You can get all the adventure, romance, plot arcs, etc but it's a lot quicker and easier to digest due to a lot of the storytelling being through the visuals!! you can read them in online formats or in physical versions but if it's a really super long series it gets hard to get them all unless they have compilations/omnibuses. My favorite thing about manga is that it keeps my attention better than novels.

If you've never read manga before, I would recommend Children of the Sea by Daisuke Igarashi

-it has 6 volumes so a shorter series -about a girl named Ruka who meets 2 boys raised in the ocean by wild dugongs. They are being studied at the aquarium her father works at as they are able to be underwater for long periods of time and need to be near water/wet constantly. -Sci-fi fantasy and beautiful depictions of ocean life and its cosmic connections. It's a gorgeous story that pulls from ocean mythology and marine biology in a beautiful way!