I love the show overall, and Season 3 and 4 definitely has their moments, but there were some changes that I didn't like in the later ones.

Some things I did/still like:

1. The addition of Corky and making JoJo appear more often

2. The dry space thing because it lead to a couple of neat storylines, although there should've been an explanation dealing with how the snorks found it was okay to go "beyond the limits" - I'll have to write a fanfic about that someday

3. While I still prefer the 12 minute episodes, the 24 minute ones did expand on certain plot points, so that never really bothered me

What I didn't like/still don't like about Seasons 3 and 4:

1. The first and most obvious reason, Dimmy's unexplained disappearance (cameo appearances aren't enough)

2. Junior being mellowed down and Bigweed/Lil Seaweed replacing him as the bad guys

3. Less Tooter and Occy throughout, especially in Season 4 (and like dimmy_fan said, calling Occy a "dogfish" instead of an octopus was really annoying)

4. The animation wasn't as great, especially in Season 4

5. The writers had the tendency to release some very bad episodes (for me, Nightmare on Snorkstreet; The Wizard of Ice; and My Dinner With Allstar come to mind)

6. This practice was common in Season 4, as some characters starred in one episode but didn't in the next - there were times when only one or two of the main characters appeared throughout (i.e. Daffney in Prehissnorkic with Gallio and JoJo)

7. The overall humor seemed quite empty at times, at least to me

8. Finally, I realize this reason may annoy some people, but there seemed to have been a lack of the Allstar and Casey relationship during the last two seasons. In fact, the writers even went as far as revealing that they no longer liked each other (although I did enjoy Snorkerella for its humor). I mean, I know this show was initially directed for kids at the time, but a cute little love story wouldn't have been so bad. To me, that's part of what made Seasons 1 and 2 so unique to me (also Dimmy and Daffney).

Now look, I'm not saying that the final two seasons were bad, but they seemed to lack the pizzaz, elements and overall vibe that the first two seasons had. But, that's just me.

Saw the Snorks appear on 7Plus (a streaming service here in Australia) so was really excited to watch it again since I hadn't seen this since I was a kid. The 1st two seasons lived up to the quality I remembered... but then season 3 came along and I wasn't sure what was going on. Some of their voices are off, and the quality seems to have trailed off a bit. Dimmy suddenly disappearing was also offputting. I assumed this must have been the pilot, as it wouldn't be the 1st time I've watched a cartoon series and they've added the pilot into a later season as filler.

But no, when I then got around to watching the next episode... things didn't improve, so was disappointed. Corky suddenly appearing out of nowhere and being their best friend they suddenly spend lots of time with was also annoying, especially since Dimmy was gone, it made him seem robbed.