Old Mac Game, may include radioactive crabs and trilobites

I'm trying to get the name of a game I used to play in the early 90s. I think it was for os 6 or 7.

Details I think are correct:
It was an arcade game like centipede with bad guys falling from the top
The first level was crabs
There were trilobites
I believe it took place on a beach
The splash screen/intro featured radioactive waste barrels


If any of this sound familiar, I'd love to hear what game you think it is. I'm pretty sure it was B&W and I've done tons of Google searches using the details above, I'm just not sure that anyone has a page on the 'net about this game.

Ultimately, I'm trying to track down screenshots or even a copy of the game that I can toss in an emulator.

Thanks!

bobnugget said:

I'm pretty sure the game you are thinking of is Firefall by Pangea Software.

...

Actually, just re-read your description - maybe it was a different game. This one is centipede like with radioactive waste barrels, but it doesn't take place on a beach...

Click to expand...

Yea, that's not the game, but I'm going to download it anyway, so thanks!