Dataset

Citizen Science based jellyfish observations along the Israeli Mediterranean coast in 2011-2025

MedOBIS MeasurementOrFact Open in mapper Explore occurrences

Jellyfish observations (Citizen Science Data) are collected from the Israeli Mediterranean coast and sea since June 2011 via a webapp (www.meduzot.co.il). Observations are validated by experts in a two-tier process, once daily and again semi-annually. This data is used to alert the public to incoming swarms and helps us increase our knowledge of their behavior, ecology, phenology (e.g. Edelist et al. 2022; Levy et al. 2024), and taxonomy (Edelist et al. 2019). The project also educates and disseminates information about jellyfish sting prevention and treatment (Edelist et al. 2023). This data is also stored in the EU Iliad Project Ocean Information Model.

Citation: Edelist D D, Angel P D, Nakar M N (2025). Citizen Science based jellyfish observations along the Israeli Mediterranean coast in 2011-2025. Version 2.3. Hellenic Center for Marine Research. Samplingevent dataset. https://doi.org/10.25607/lverbw

Published: October 20, 2025 at 08:53

URL: http://ipt.medobis.eu/resource?r=dori

Dr. Dor Edelist
University of Haifa, Ruppin Academic Center

Prof. Dror Angel
University of Haifa, Ruppin Academic Center

Ms. Noa Nakar
University of Haifa, Ruppin Academic Center

Ioannis Rallis
HCMR-IMBBC

32,039
occurrence records
91,837
measurements and facts
21
taxa
16
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 32,039
100.0%
minimumDepthInMeters 32,039
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 32,039
100.0%
ON_LAND 2,706
8.4%

Measurement types

DNA derived data