Absolutely stunning, the theme of the sea was perfectly captured in many unexpected and different ways, every music fits (except maybe Something's Fishy? It feels a bit too lighthearted considering the context, but it's still really well composed nonetheless)
The Prince's theme is a definite favourite, his leitmotif is just soo good. (Weirdly enough reminds me of Freaky Fred's theme from Courage the Cowardly Dog, it has a dreamlike quality to it)
The characters seem like a lot of fun, I'd love for them to be illustrated some day. I think it's clever how the embodiment of lost toys was brainwashed by pollution, one feels like a negative extreme of the other in a cool way
Usually I really don't like "Quirky character vocals" but I don't know, Jules won me over (also his battle theme has a squarish electric guitar in it? Reaaaaally remind of Plok's Beach theme, it's awesome)
This is unrelated to the songs, but the cover art for this is gorgeous, really eye-catching.
Anyway, great job!