Ocean anime recommendation list
I'm trying to find a specific anime but all are welcome
Do you mean you're just looking for anime that feature the ocean...? Sorry, I'm confused as to what you're looking for
Gargantia on the Verdurous Planet. I think it's still streamable on Netflix.
I'm gonna assume this means you want shows that feature the ocean.
As @Haildodger mentioned above, Gargantia on the Verdurous Planet has the ocean very heavily featured, beautiful animation and is a good series.
A Lull in the Sea is one I have not quite completed yet, but from what I have seen is pretty good not to mention visually stunning.
Tsuritama also has a lot of water scenes as it centers around fishing.
Ponyo also has a lot of scenes involving the ocean (It is a spin on The Little Mermaid)
Ika Musume is also all about a squid girl coming up out of the ocean to invade land (It's a comedy)
Amanchu involves a lot of swimming and pretty water scenes.
High School Fleet is a bunch of girls manning military ships.
And while it's not the ocean, I am gonna include Free! in here. Because even though it's not the ocean, this show has the prettiest water animation I have seen.