Yeah I put that, but indirectly.
Actually, that's not how they work. As soon as they see a target—either you or an enemy, they will constantly chase it and be blind to any others (although I can't say I've never tried luring them into enemies directly in their path; I wasn't really paying attention on that level, I was so panicky, rofl), so tricking jellyfish only works for the first time of
The great comeback, where you can force the first crab over the ledge with a block into the jellyfish's line of sight.
I really like how the enemies interact against each other in this game. Not many games do that