Dataset

Jellyfish Sightings along the Italian Coastline from 2009 to 2017

EurOBIS MeasurementOrFact Open in mapper Explore occurrences

From 2009 the Italian project Occhio alla Medusa started involving citizens to record sightings of gelatinous organisms. In 2010 till 2015, the Italian popular science magazine FOCUS supported the campaign dedicating a webpage and releasing a smartphone app to upload records. From 2013 we started to collect data also from the web. In 2016 we opened a facebook page “Meteo Meduse” to replace the app. Species of gelatinous macrozooplancton including Cnidaria, Ctenophora, and Thaliacea, have been sighted by citizens recording date of observation, species name or genus, location, abundance as number of individuals per square meter, coordinates and a picture. We validate about 6000 records of bloom events from 2009-2017 and the collection is still continuing by email and the fb page.

Citation: Boero Ferdinando, Piraino Stefano, Zampardi Serena (2019). Jellyfish sightings along the Italian coastline from 2009 to 2017. Marine Data Archive. https://doi.org/10.14284/345

Published: November 25, 2025 at 09:29

URL: http://ipt.vliz.be/eurobis/resource?r=jellyobs_09_17

serena zampardi
Conisma

Ferdinando Boero
University of Naples

Stefano Piraino
University of Salento

Serena Zampardi
Conisma

6,669
occurrence records
13,338
measurements and facts
15
taxa
14
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 6,669
100.0%

Quality flags

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

Flag Dropped Records
ON_LAND 706
10.6%
DEPTH_EXCEEDS_BATH 289
4.3%

Measurement types

DNA derived data