Collecting samples of sand during acute bleaching
![](https://eatlas.org.au/sites/default/files/styles/m_very_large/public/shared/nesp-twq-3/3-3-1/BLC_5150_Rib%20Reef_March%202017_AIMS.jpg?itok=cjor1VYB)
Photographers: Eric Matson
Description
A snorkeler is collecting a reef sand sample from Rib Reef that will be analysed to determine the effect of acute heat on free living coral symbionts