Diatoms - Hannaea
Hannaea inhabits waters that are low nutrient but high in oxygen (oligotrophic). It grows attached to surfaces at the bottom of the water column (benthic).
Hannaea arcus. Found in core TL1 at Three Lakes, at 5.95m depth.
See Hannaea on Algaebase or Diatoms.org or on the Natural History Museum of Wales website.
