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9 surprising animals that fly

By: Bryan Nelson on Oct. 22, 2010, 12:48 p.m.
Ballooning Spiders

Photo: Wiki Commons/CC License

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Ballooning spiders

It might be every arachnaphobe's worst nightmare, but many spiders are capable of flight. Unlike other flying animals, however, spiders have aerial skills because specialized parachutes, which they weave from their silk.

Few adult spiders rely on ballooning for regular travel, but the young of many species use the technique to leave the nest and build webs in faraway places. Some spiders have been found on atmospheric data balloons as high as 16,000 feet above sea level!