Sorry I catched them both actually. Blue one gave me some running but I did it.
hm so i got a case where there was a fish that was supposed to I think block his movement (like it blocked mine) and blue crab just went through it.
Great job catching both the crabs!
Yes, the crabs can run over the fish and the sea star. They have three goals listed in priority order:
1) Avoid the octopus: Long distance (100 pixels)
2) Avoid the sea star: Short distance (50 pixels)
3) Approach the fish: Short distance (50 pixels)
There is no random component in the crab motion.