IMIS - Marine Onderzoeksgroepen

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Great Eggcase Hunt - global citizen science observations of chondrichthyian eggcases
Citation
Allen H, Gordon C (2026). Great Eggcase Hunt - global citizen science observations of chondrichthyian eggcases. Version 1.2. Shark Trust. Samplingevent dataset. https://www.dassh.ac.uk/ipt/resource?r=st_greateggcasehunt&v=1.2 https://doi.org/10.15468/v3ugzp
Contact: Allen, Harriet ; Gordon, Cat ;
Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.
Description
This dataset details approved records from the Shark Trust's Great Eggcase Hunt, active since 2003. Comprised of citizen science observations, both on land and in-situ, records of eggcases from around the world have been complied to help better understand these oviparous species. Data comes from ad-hoc records, regular surveys and data uploads from partner organisations. Please note that not all records are verified, but this has been indicated in the extended Measurements or Facts.
Lineage
Prior to publication data undergo quality control checked which are described in https://github.com/EMODnet/EMODnetBiocheck?tab=readme-ov-file#understanding-the-output
Scope
Themes:
Biology > Fish
Keywords:
Marine/Coastal · Bio-geographical regions · Biota · Chondrichthyes · Egg cases · Environment · Geoscientific Information · Habitats and biotopes · Metadata non conformant · Metadata not evaluated · No limitations to public access · Oceans · Oviparity · Sea regions · Social participation · WGS84 (EPSG:4326) · XYZ ASCII · EurOBIS calculated BBOX · Chimaeriformes · Chondrichthyes · Heterodontidae Gray, 1851 · Orectolobidae Gill, 1896 · Rajidae de Blainville, 1816 · Scyliorhinidae Gill, 1862
Geographical coverage
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: -151,41; MinLat: -46,3 - MaxLong: 174,83; MaxLat: 79,73 [WGS84]
Temporal coverage
1 January 2003 - 31 December 2024
26 January 2003 - 31 December 2024 (EurOBIS harvested data)
Taxonomic coverage
Chimaeriformes [WoRMS]
Chondrichthyes [WoRMS]
Heterodontidae Gray, 1851 [WoRMS]
Orectolobidae Gill, 1896 [WoRMS]
Rajidae de Blainville, 1816 [WoRMS]
Scyliorhinidae Gill, 1862 [WoRMS]
Parameter
Count (in assayed sample) of biological entity specified elsewhere [BODC] (EurOBIS harvested data)
Contributors
The Shark Trust, more, data creator
Allen, Harriet
Gordon, Cat
Related datasets
Published in:
EurOBIS: European Ocean Biodiversity Information System, more
URLs
Dataset information:
Other:
Dataset status: Completed
Data type: Data
Data origin: Citizen science
Release date: 2026-04-30
Metadatarecord created: 2026-05-11
Information last updated: 2026-06-04
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy