Subduction Zone
Veteran Member
I would think that because you mention there is no goal, there are other causes for life to emerge (evolve) from sea dwellers to land dwellers. You mention food source. OK, do you think that these fish smelled the food source and desired it so much that they developed the means to get to the land to eat it, even if they had enouigh to eat in the water? Or maybe not enough to eat in the water -- they developed legs in teeny tiny steps and then eventually developed until their offspring mutants no longer could live exclusively in water?
There is no goal means that they were not trying to evolve legs. They were merely trying to eat food that is not available in their old habitat.