Diving bell spiders use bubble webs ‘like gills’

Diving bell spiders only need to come up for air once a day, according to researchers.
The spiders are named for their sub-aqua webs which they fill with air in order to breathe underwater.
Scientists studying the European arachnids measured oxygen levels inside and around an air bubble web.

Read more: http://www.bbc.co.uk/nature/13614742

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