> Ethical note: No specific license was required for this work. The duration of any single experiment was so short that each crab never reached dangerous level

> Ethical note: No specific license was required for this work. The duration of any single experiment was so short that each crab never reached dangerous level, that the crabs were kept in comfortable condition, and that after all experiments the crabs were released to their natural habitats. Furthermore, on visual inspection,no crabs appeared to have been injured or adversely affected by the experiments. The way this ethical note is phrased seems to suggest the experimenters basically went to the beach and picked up a bunch of crabs and then released them again, as opposed to any sort of standardized procurement process, which I find amusing.