Giant anemone, star coral, and sea fans.
Photographer: Noel Lopez Fernandez. See more photos from this shoot.
Via Saray Dugas / Pinterest
I love this illustration, especially the little diver in the corner.
There are more than 200 genera of living diatoms, and it is estimated that there are approximately 100,000 extant species. Diatoms are a widespread group and can be found in the oceans, in freshwater, in soils and on damp surfaces. Most live pelagically in open water, although some live as surface films at the water-sediment interface (benthic), or even under damp atmospheric conditions. They are especially important in oceans, where they are estimated to contribute up to 45% of the total oceanic primary production.
(photo via Phytoplankton key - Phycokey - Microscopic Art images)