We found the uncommon benthic ctenophore, Lyrocteis imperatoris, in densities of up to 12 individuals per square meter on mesophotic ecosystems in the Philippines over three sequential years. In 2017, however, only a few individuals were found. Further study is needed to determine the cause of the decline in population.

Depth range
85- 110 m

Mesophotic “mentions”
3 x (total of 510 words)

Classification
* Presents original data
* Focused on 'mesophotic' depth range
* Focused on 'mesophotic coral ecosystem'

Fields
Disturbances
Biodiversity
Ecology

Focusgroups
Other invertebrates

Locations
Philippines

Platforms
Rebreather