SEFSC GoMMAPPS Vessel Survey 2018 Winter

NOAA Southeast Fisheries Science Center (SEFSC)

Dataset credit

NOAA Southeast Fisheries Science Center (SEFSC)


Primary contact Gina Rappucci NOAA Southeast Fisheries Science Center
Secondary contact Lance Garrison NOAA Southeast Fisheries Science Center
Data entry Ei Fujioka Duke University



As part of the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS), the SEFSC conducted shipboard surveys of the oceanic waters of the Gulf out to the U.S. Exclusive Economic Zone (EEZ) between 14 January and 16 March 2018. The survey was designed for a two independent visual observer teams approach with Distance sampling to estimate the detection probabilities for marine mammal sightings; however, the survey was conducted with only one team between 14 January and 5 February.


The primary goal was to collect data on the distribution and abundance of marine mammals in the U.S. waters of the Gulf of Mexico (GOM) using visual survey teams and passive acoustic monitoring.

Supplemental information

Provider's survey code is GU1801.
Perpendicular distance to the animal is not publicly available.
The dataset is accompanied by transect (effort) data which is provided as a separate file.

Sightings included were detected by the flying bridge only or by both the flying bridge and bridge wing teams.

Environmental Attribute Codes
Beaufort Sea state
0 Calm, mirror like seas
1 Waves <1ft, rippled surface
2 Small wavelets (<2 ft), no white caps
3 Large wavelets (<3ft), scattered white caps
4 Swell 3-4 ft, numerous white caps
5 Swell >5 ft, many white caps, some spray
6 Swell >10 ft, white caps everywhere, spray
0 Clear
1 Good
2 Fair
3 Poor
0 Clear
1 Mist
2 Light Rain
3 Heavy Rain
Cloud Cover
0 Clear
1 0-25% Cloudy
2 26-50% Cloudy
3 51-75% Cloudy
4 76-100% Cloudy
5 Overcast
0 No Glare
1 <10% of visual field
2 10-25% of visual field
3 26-50% of visual field
4 51-75% of visual field
5 >75% of visual field
Glare intensity
0 No Impairment
1 Slight Impairment
2 Moderate Impairment
3 Severe Impairment
0 Poor
1 Fair
2 Moderate
3 Good
4 Excellent




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.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidUnique ID number (generated by OBIS-SEAMAP)
sightidSight ID
comnameSpecies common name
sp_tsnTaxonomic Serial Number added by OBIS-SEAMAP
individualcountNumber of animals sighted (average of best counts by observers)
latitudeLatitude in decimal degrees (WGS84)
longitudeLongitude in decimal degrees (WGS84)
perpendiculardistancePerpendicular distance (not available to the public)
eventdateDate and time of the sighting in local time
transectTransect No.
beaufortBeaufort sea state
visibilityVisibility code
weatherWeather code
cloudcoverCloud cover code
glareGlare code
glareintensityGlare intensity code
conditionsOverall conditions code
effortidEffort ID
tripidTrip ID
platformvltsAlways V (Vessel)
oneffortFlag (Y/N) to indicate on effort
sighttypeSighting type (always F)
datasetidDataset ID assigned by provider
datasetnameDataset name by provider
eventdatetimezoneTime zone
geomGeometry field added by OBIS-SEAMAP
Marine mammals88
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2018-01-15
Date, End2018-03-15
Temporal prec.111111
Latitude24.00 - 29.68
Longitude-96.45 - -83.10
Coord. prec.5 decimal digits
Data typeAnimal sighting
EffortYES (ID: 1983)
Traveled (km)5,701
Effort hours338
Contr. through
Sharing policy CC0 no rights reserved
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics