"We may all be netted together" - Darwin. This picture is a great way to illustrate and explain the relations/interactions within all animals. Does not necessarily relate to sexual selection, but a good representation of all Darwin theorized of.
Charles Darwin 1809 - 1882 English naturalist. Proposed the theory of natural selection in evolution. Wrote famous " On Origin of Species". 5 year study voyage on the ship "Beagle". Honoured with burial at Westminster Abbey. Described as one of the most influential figures in human history.