SCANS II cetacean sightings on tracker platform of vessel surveys 2005

Sea Mammal Research Unit, University of St. Andrews

Dataset credit

Sea Mammal Research Unit, University of St. Andrews


Primary contact Claire Lacey Sea Mammal Research Unit, University of St. Andrews
Data entry Ei Fujioka Duke University


Lacey, C. 2014. SCANS II cetacean sightings on tracker platform of vessel surveys 2005. Data downloaded from OBIS-SEAMAP ( on yyyy-mm-dd.
Hammond, P.S., Macleod, K., Berggren, P., Borchers, D.L., Burt, L., Cañadas, A., Desportes, G., Donovan, G.P., Gilles, A., Gillespie, D., et al. 2013. Cetacean abundance and distribution in European Atlantic shelf waters to inform conservation and management. Biological Conservation. 164, 107–122.





Supplemental information

[2020-09-30] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS).
Turtles: Testudines (173749) => Testudines (948936)

Surveys from seven different vessels were merged. Each vessel contained two sightings platforms running concurrently – primary and tracker. This dataset includes sightings from the tracker platform. Sightings from the primary platform are registered in SCANS II cetacean sightings on primary platform of vessel surveys 2005.

Effort or vessel tracks for these surveys are provided with the primary platform dataset. Survey conditions such as sea state, glare, swell, wind are found in the effort data.

In the tracker platform, Big-eye binoculars were used.

The trackers used to track groups of animals as they came passed the boat and record them accordingly. However, this dataset does not contain such duplicates.




This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downloadable online. Other attributes may be obtained upon provider's permission.

Attributes in dataset

Attribute (table column)Description
oidUnique ID number (generated by OBIS-SEAMAP)
gpsindexGPS index
obs_dateDate of observation
obs_timeTime of the observation (local time zone converted from UTC by OBIS-SEAMAP)
datetime_utcDate and time of observation in UTC
sightingnumberSighting number
reticleReticle in degrees
reticlelineReticle line
sp_obsSpecies name recorded
sp_tsnTaxonomic Serial Number added by OBIS-SEAMAP
multispeciesFlag of multiple species
lownumberLow number of number of animals
obs_countbest estimate of number of animals
highnumberHigh number of number of animals
calvesNumber of calves
cueRecord of the initial cue for the sighting
aspectvalueAspect value
duplicatestatusDuplicate status
duplsightingnoDuplicate sighting number
matchstatusMatch status
matchsightnoMatch sighting number
endtrackEnd track
observerObserver ID
estimatedangleEstimated angle
radialdistanceRadial distance
measuredbearingMeasured bearing (calculated later using software)
measureddistanceMeasured distance (calculated later using software)
transectTransect number
latitudeLatitude in decimal degrees
longitudeLongitude in decimal degrees
transect_originalTransect original
ik_effdefinition not provided
check_radialdistancedefinition not provided
pdistdefinition not provided
timesseendefinition not provided
vessel_codeVessel code
geomGeometry field added by OBIS-SEAMAP
Marine mammals956
Sea turtles2
Rays and sharks1
Other species8
Non spatial0
Non species0
Date, Begin2005-06-29
Date, End2005-07-28
Temporal prec.111111
Latitude35.95 - 62.10
Longitude-11.76 - 12.62
Coord. prec.5 decimal digits
Data typeAnimal sighting
Traveled (km)0
Contr. through
Sharing policy CC-BY-NC (Minimum)
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics