Trying to find a jungle episode of TMNT(20030.

When I was 6, I used to watch Jetix a lot. One of the shows I frequently watched was 2003 TMNT. However, I remember an episode I saw that I can't find any trace of today. It had one of the turtles, and Casey ended up on an island, and that's about all I remember.

Can anyone help me find the episode?