Arachnophobes beware - front and back picture of a big female Banded Garden Spider, found in South Coral Gables. It's colors are flashy to deter predators from eating it, and you can almost see the pattern of two skulls one on top of another on its belly. However, it is harmless for most cases as these spiders are most aggressive when defending their egg cocoon. Additionally, most of them do not have big enough fangs to penetrate human skin; the big ones can deliver a bite similar to a bee sting, but you'd need to annoy it a lot for that. It's absolutely beautiful, and you can see I threw a grasshopper in her web to see the insect getting destroyed. Nature at its finest.
Also, know that spiders eat around 800 million metric tons of biomass (mostly insects, mosquitoes, flies and whatnot) (according to The Science of Nature journal). They're our friends, don't kill them. -