Parellisina curvirostris is an encrusting bryozoan, typical of shallow shelf environments. The colonies form delicate white lace-like patches on stones, shells and calcareous concretions in waters between 30 – 80 m.

Parellisina. curvirostris is widespread throughout warm temperate and sub-tropical waters. It is common at moderate depths in the Mediterranean and extends as far north as the western English Channel.

Belgian Exclusive Economic Zone, De Haan, European waters (ERMS scope), Gulf of Mexico, Portuguese Exclusive Economic Zone, Spanish Exclusive Economic Zone, United Kingdom Exclusive Economic Zone

Depth range based on 3 specimens in 1 taxon.
Water temperature and chemistry ranges based on 3 samples.

Environmental ranges
  Depth range (m): 19 - 33
  Temperature range (°C): 23.535 - 25.301
  Nitrate (umol/L): 0.120 - 1.078
  Salinity (PPS): 35.082 - 36.231
  Oxygen (ml/l): 4.657 - 4.714
  Phosphate (umol/l): 0.118 - 0.175
  Silicate (umol/l): 0.993 - 3.947

Graphical representation

Depth range (m): 19 - 33

Temperature range (°C): 23.535 - 25.301

Nitrate (umol/L): 0.120 - 1.078

Salinity (PPS): 35.082 - 36.231

Oxygen (ml/l): 4.657 - 4.714

Phosphate (umol/l): 0.118 - 0.175

Silicate (umol/l): 0.993 - 3.947
 
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