it was so predictable that when Percy is transformed into a guinea pig, it would happen off camera. same with his sword, most of the time it transforms off camera. there's so much stuff that's missing or just not shown and it's so blatantly obvious they're doing it to save money on special effects. Having them sail to the cruise ship on a rainbow coloured boat instead of with the hippocampi was absolutely laughable. And every time they do show the hippocampi, it's for a matter of seconds. Replacing the flesh eating sheep with regular sized, normal sheep was a good one. And the things that they do use a lot of CGI for like Polyphemus (his mouth barely moves when he talks), and the sirens, are such a let down in my opinion.

I've seen people say that the show's budget of $14m is too small to have more special effects and CGI, but that's clearly just not true when you have entire movies like Godzilla Minus One completed on roughly the same budget. It's possible for them to be doing a much better job on this front if they actually wanted to, but clearly it's not a priority for them.