SWFSC Marine Mammal Survey, SWAPS 1997, Cruise 1607

NOAA Southwest Fisheries Science Center (SWFSC)

Dataset credit

Marine Mammal and Turtle Division, Southwest Fisheries Science Center, NMFS, NOAA


Primary contact Barb Taylor NOAA Southwest Fisheries Science Center
Data entry Ei Fujioka Duke University



The 1997 Sperm Whale Abundance and Population Structures (SWAPS) line-transect survey was designed to census sperm whales near the end of their breeding season in the North Pacific Ocean from the west coast of the U.S. out to 158 degrees west longitude. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard the NOAA ship McArthur for a total of approximately 12,000 kilometers surveyed from early March to early June 1997. This dataset provides the time-date and geographical coordinates, by species/stock, of all cetaceans detected during the survey, as well as the daily and intra-daily start and end points of the line-transect survey.


The primary objective was to census sperm whales near the end of their breeding season in the North Pacific Ocean from the west coast of the U.S. out to 158 degrees west longitude.

Supplemental information

Data of SWFSC Marine Mammal Sightings from 1997 to 2009 were put together and submitted to OBIS-SEAMAP by Tim Gerrodette, NOAA SWFSC. The data are registered separately per cruise.


Barlow, Jay and Barbara L. Taylor. 2005. Estimates of sperm whale abundance in the northeastern temperate Pacific from a combined acoustic and visual survey. Marine Mammal Science. 21(3):429–445.



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)
cruiseCruise No
obs_dateDate of the sighting
obs_timeTime of the sighting (local time zone)
sighting_noSighting No.
species_orgSpecies code in original format
sp_obsSpecies code recorded
sp_tsnTaxonomic Serial Number added by OBIS-SEAMAP
latitudeLatitude in decimal degrees
longitudeLongitude in decimal degrees
obs_countGroup size
geomGeometry field added by OBIS-SEAMAP
Marine mammals224
Sea turtles4
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin1997-03-09
Date, End1997-06-08
Temporal prec.111111
Latitude20.51 - 46.01
Longitude-160.93 - -118.58
Coord. prec.2 decimal digits
Data typeAnimal sighting
EffortYES (ID: 1029)
Traveled (km)10,099
Effort hours709
Contr. through
Sharing policy CC-BY-NC (Minimum)
Also available in OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics