Skip to content

DiscoverSpeciesOther invertebrates

Cossura delta

  • Other invertebrates
  • IUCN: Not evaluated
  • Usual depth2–357 m
  • Water temperature11–29 °C
  • Best monthsFebruary, June, and September
  • How commonOccasional
All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

  • January: 53 records
  • February: 204 records
  • March: 152 records
  • April: 47 records
  • May: 95 records
  • June: 223 records
  • July: 159 records
  • August: 193 records
  • September: 238 records
  • October: 129 records
  • November: 70 records
  • December: 43 records

Depth and water temperature

Depth

Mostly recorded at 2–357 m · Deepest record: 3,312 m

  • 0–10 m: 227 records
  • 10–20 m: 17 records
  • 20–30 m: 8 records
  • 30–40 m: 3 records
  • 40–50 m: 6 records
  • 50–60 m: 0 records
  • 60–70 m: 1 records
  • 70–80 m: 1 records
  • 80–90 m: 5 records
  • 90–100 m: 0 records
  • 100–110 m: 0 records
  • 110+ m: 44 records

Water temperature

Recorded in surface water of 11–29 °C

  • 10–12 °C: 3 records
  • 12–14 °C: 1 records
  • 14–16 °C: 0 records
  • 16–18 °C: 1 records
  • 18–20 °C: 0 records
  • 20–22 °C: 0 records
  • 22–24 °C: 124 records
  • 24–26 °C: 819 records
  • 26–28 °C: 22 records
  • 28–30 °C: 4 records

Names and classification

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

  • Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
  • Conservation status as published by GBIF (IUCN Red List).
  • 1,614 open-data records from 1974 to 2011.
  • Species data updated November 1, 2026.

Log what you see on your next dive

The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.

Join the waitlist

DiveHive uses necessary cookies to work. With your permission we also use analytics to see which pages help. Analytics is off until you say yes, and we never record what you type.

  • NecessaryAlways on: your choice, security.Always on
  • AnalyticsOff unless you accept.Off
Privacy policy