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Story: Life in hot springs

Microbial mats

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Microbial mats

These slimy mats are in the hot springs at Ōrākei Kōrako. They are made of cyanobacteria surrounded by a gelatinous material that holds them together. A thin film of warm water covers the mats and keeps them moist. The bubbles are produced by the bacteria during photosynthesis. Some insects are also dependent on the mat for nourishment.

Using this item

GNS Science, Extremophile Photo Collection

Reference: DCP_1363

by Duncan Graham

Permission of GNS Science must be obtained before any use of this image.

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How to cite this page

Bruce Mountain, Life in hot springs – Thermophiles, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/6458/microbial-mats (accessed 4 June 2026).

Story by Bruce Mountain, published 2 March 2009.