Why are most spider webs formed in a circular shape instead of like a square or oval shape?
Students at WAS Actually, spiders make webs that are shaped anywhere from circular (orb) webs, to oval, to dome-shaped, to more or less flat sheets, to amorphous, multidirectional “space” webs, to little nets that are “cast” by the spider, to webs with towers or special things like that in them, to simple single strands. There are many sorts of webs/web shapes. A good source of web types and their evolution is a book written by William G. Eberhard. I am wondering if you can buy Portia spiders, and if so where? (asked by several viewers) There are no suppliers from whom you could buy Portia. Portia is an amazingly hard spider to find in the field if you don’t have direct help from an experienced field person, though once you know they aren’t very hard to locate. But there aren’t very many Portia in any one area in the field, either. The few researchers working on Portia in the laboratory treasure them highly, as they are difficult to raise and keep, for one main reason: they need a high
