Loggerhead turtle movements in the Southern California Bight


Dataset credit

Data provider
NOAA Southwest Fisheries Science Center
Originating data center
Satellite Tracking and Analysis Tool (STAT)
Project partner
This project is under the leadership of scientists at the U.S. National Marine Fisheries Service (NMFS). This federal organization is responsible for effective management of our U.S. based fisheries. To do so requires that management decisions be based on the best available science. This project is developed to generate such information, particularly as it relates to fisheries time-area closures in the Southern California Bight.
Project sponsor or sponsor description
This project is a collaboration among scientists at the U.S. National Marine Fisheries Service's Southwest Fisheries Science Center in La Jolla, CA, and the NMFS West Coast Regional Office in Long Beach, CA. The Aquarium of the Pacific in Long Beach, CA is a key partner and has served as the rehabilitation institution for two turtles (Coco and Char Char) tracked so far as part of this project. SeaWorld - San Diego has also been a key contributor, serving as the rehabilitation center for Ruth. Additional partners include ICAPO and Ralph Pace Photography. The NMFS permit number for Coco's satellite tracking research is 14510.


Primary contact Jeffrey Seminoff NOAA Southwest Fisheries Science Center
Data entry Michael Coyne seaturtle.org



Endangered North Pacific loggerhead turtles (Caretta caretta) are distributed widely throughout the North Pacific Ocean. Scientists have known that juvenile loggerhead turtles originating from Japanese nesting beaches cross the Pacific Ocean to access the productive waters off the Pacific Coast of North America, although the movements of these loggerhead turtles in U.S. waters of southern California are poorly understood. This project's goal is to track the movements of juvenile loggerheads in this portion of the California Current Large Marine Ecosystem. Understanding their movement patterns, and how they relate to oceanographic conditions in the region will provide significant information for management efforts aimed at reducing human impacts to loggerheads in this area.



Supplemental information

Visit STAT's project page for additional information.




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
prognumProgram number
tag_idPTT ID
lcLocation class
iqQuality indicator
dir1Dir 1
nb_mesNumber of messages received
big_nb_mesdefinition not provided
best_levelBest signal strength in dB
pass_durationPass duration in seconds
nopcNumber Of Plausibility Checks successful (from 0-4)
calcul_freqCalculated frequency
altitudeAltitude used for location calculation
speciesSpecies name
project_idSTAT Project ID
lc_filterParameters to location filtering
speed_filterParameters to speed filtering
distance_filterParameters to distance filtering
topo_filterParameters to topo filtering
time_filterParameters to time filtering
angle_filterParameters to angle filtering
life_stageLife stage of the animal
genderGender of the animal
wetdryWet or dry
wetdry_filterParameters to Wet or dry filterint
obs_datetimeDate and time (local time zone)
timezone_hTime difference from UTC
Marine mammals0
Sea turtles1,092
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2015-04-15
Date, End2021-11-25
Temporal prec.111111
Latitude28.00 - 34.01
Longitude-124.21 - -117.46
Coord. prec.3 decimal digits
Data typeTelemetry location
TracklinesYES (ID: 1266)
Traveled (km)5,321
Travel hours7,685
Contr. throughSatellite Tracking and Analysis Tool
Sharing policy Permission required
Shared with SWOT
GBIF (via DOI)*
* Aggregated summary
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics