Another CEE Trial – and Gervais’ beaked whales!
August 10, 2026
A second controlled exposure experiment trial with simulated Continuously Active Sonar (CAS) was conducted on August 1. In addition to the usual goose-beaked whales, we also had a sighting of less common Gervais' beaked whales.
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First CEE Trial of 2026 – and False Killer Whales
July 23, 2026
The Atlantic BRS team had an extremely productive day on Friday, July 17th with tags deployed on both false killer whales and goose-beaked whales, as well as a successful controlled exposure experiment with simulated Continuous Active Sonar signals.
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Controlled Exposure Experiment Trial with Simulated CAS Signals
October 1, 2025
On Friday, September 19th, the project team led by Duke University and Southall Environmental Associates conducted a Controlled Exposure Experiment (CEE) trial with goose-beaked whales Ziphius cavirostris in our study area off Cape Hatteras. They generated simulated Continuous Active Sonar (CAS) signals with a brand-new sound source built specifically for this purpose.
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Atlantic BRS - successful CEE trial with the USS Donald Cook
July 22, 2025
The Atlantic BRS team just completed a successful controlled exposure experiment with the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) involving eight satellite-tagged beaked whales off Cape Hatteras.
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Atlantic BRS - field work update
July 16, 2025
You never know what you will see offshore, and this weekend was no exception.
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Atlantic BRS 2025 - Old Friends & Baby Beaked Whales
June 26, 2025
Field work recently kicked off for the Atlantic BRS project field season and we're happy to say that things appear much more "normal" compared to 2024 when Ziphius were relatively scarce at the Hatteras study site.
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Successful CEE Trial with the USS Thomas Hudner
July 24, 2024
In July 2024, the Atlantic Behavioral Response Study, led by Duke University, conducted a successful controlled exposure experiment (CEE) involving the USS Thomas Hudner and tagged goose-beaked whales off Cape Hatteras. The study assessed the whales' behavioral responses to Continuous Active Sonar (CAS) signals, utilizing a High Frequency Recording Package (HARP) for sound recordings and coordination with the USS Thomas Hudner for sonar signal transmission. Preliminary observations suggested minimal behavioral changes in the focal whale, Zc150, during the experiment.
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First Satellite Tag Deployments for Atlantic BRS 2024
July 8, 2024
In June 2024, a Duke University team initiated the Atlantic Behavioral Response Study (BRS) by deploying satellite-linked dive recorders on goose-beaked whales (Cuvier's beaked whales) off the coast of North Carolina. These tags collect data on the whales' diving behavior and locations, enhancing understanding of their baseline activities. Additionally, the team released a rehabilitated hawksbill sea turtle named Bagheera back into the Atlantic Ocean.
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Large Whale Action in the Mid-Atlantic
January 30, 2024
After a relatively slow start to the 2023-2024 large whale season, things are picking up here in the Mid-Atlantic. Last week was the busiest we’ve had so far this season for several of our projects as well as adjacent colleagues.
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Cuvier's from Cape to Canyon
September 16, 2022
Photo ID match of a Goose-beaked whale between Cape Hatteras and Virginia Beach after two years.
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Atlantic BRS – 2022 CEE with the USS Farragut
August 26, 2022
A controlled exposure success story using a Navy ship.
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Atlantic BRS - First CEE of 2021
August 9, 2021
A team of researchers and Navy staff recently completed the first controlled exposure experiment of the 2021 field season for the Atlantic Behavioral Response Study.
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Atlantic Behavioral Response Study kicks off 2021 field season
July 13, 2021
The Atlantic Behavioral Response Study kicked off the 2021 field season last week by deploying the first round of satellite-linked telemetry tags on Cuvier's beaked whales.
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Atlantic BRS - First CEE of 2020
July 17, 2020
The first CEE of 2020 overcame the challenges of COVID-19.
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Atlantic BRS - Multi-scale CEE Success!
August 15, 2019
The first CEE while two different tag types were deployed.
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Repeat tagging customers to humpback monitoring project
January 30, 2018
Some interesting notes on site fidelity in Humpack whales.
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Bonus tagging in JAX
June 15, 2016
Odontocete tagging in Florida.
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Tagging Deep Diving Odontocetes Off Cape Hatteras - Part 3
September 26, 2014
Details on the 3rd field session for the year.
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North Atlantic Right Whale Disentanglement
March 3, 2014
Our team provided assistance to a disentanglement effort.
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Passive acoustic monitoring for right whales off Cape Hatteras
October 21, 2013
MARUs off NC
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Complete
Behavioral Response Research Evaluation Workshop II (BRREW II)
Project Objectives
Response
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Complete
Passive Acoustic Monitoring for North Atlantic Right Whales off Cape Hatteras, North Carolina
Project Objectives
Investigate the timing of right whale migration through the Mid-Atlantic region, as well as the relative distance from shore and acoustic behavior of migrating whales
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Complete
Baseline Monitoring for Marine Mammals in the East Coast Range Complexes (vessel surveys)
Project Objectives
Assess occurrence, habitat associations, and stock structure of marine mammals and sea turtles in key areas of Navy range complexes
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Complete
North Atlantic Right Whale Monitoring in the Southeast Calving Area
Project Objectives
Assess behavior of right whales in coastal waters of the Southeast calving grounds, including rates of travel of individuals, dive behavior, and rates of sound production
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Complete
Baseline Monitoring for Marine Mammals in the East Coast Range Complexes (passive acoustics)
Project Objectives
Assess occurrence, density, and vocal activity of marine mammals and sea turtles in key areas of Navy range complexes
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Complete
Mid-Atlantic Humpback Whale Catalog
Project Objectives
Establish a centralized collaborative humpback whale photo-id catalog for the mid-Atlantic and southeast regions to support management and environmental planning
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Complete
Occurrence, Ecology, and Behavior of Deep-diving Odontocetes
Project Objectives
Establish behavioral baseline and foraging ecology. Assess behavioral response to acoustic stimuli and Navy training activities
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Complete
Behavioral Response of Humpback Whales to Vessel Traffic
Project Objectives
Understand the behavioral response of humpback whales to approaching vessels in the shipping channels at the mouth of the Chesapeake Bay.
View project
Current
Behavioral Response Analysis of Two Populations of Short-Finned Pilot Whales to Mid-Frequency Active Sonar
Project Objectives
Utilize newly developed statistical methods from the Atlantic BRS project and apply them to all the satellite-tagged pilot whales from both the Atlantic and Pacific studies.
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Current
Jacksonville Shallow Water Training Range Vessel Surveys and M3R Species Verifications
Project Objectives
Monitor species composition and distribution on JSWTR, support M3R species verifications
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Current
North Atlantic Right Whale Monitoring, Conservation, and Protection
Project Objectives
Assess occurrence, habitat use, and behavior of North Atlantic right whales in the mid-Atlantic region
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Current
Atlantic Behavioral Response Study
Project Objectives
Assess behavioral response of beaked and pilot whales to mid-frequency tactical sonar
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Date Published:
  • April 1, 2018

Five species of sea turtles occur in Chesapeake Bay and the coastal waters of Virginia with varying regularity. They include the loggerhead turtle (Caretta caretta), Kemp’s ridley turtle (Lepidochelys kempii), green turtle (Chelonia mydas), leatherback turtle (Dermochelys coriacea), and hawksbill turtle (Eretmochelys imbricata) (Musick and Limpus 1997). Loggerhead and Kemp’s ridley turtles are the most abundant and regularly occurring species, and green turtle numbers have increased over the past two decades in Virginia (Barco et al. 2015, Swingle et al. 2014, 2015, 2016).

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  • 1,259.42 KB
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Date Published:
  • April 1, 2014

The goal of the project is to assess the occurrence, habitat use, and behavior of loggerhead, green, and Kemp's ridley turtles in the Hampton Roads region to better assess the impacts that U.S. Navy activities may have on these protected species.

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  • 1,337.08 KB
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Date Published:
  • February 28, 2015

The ultimate goal of this study is to provide the US NAVY with the necessary data to help identify seasonal areas where cheloniid sea turtles are likely to occur in order to inform DOD sea turtle protection efforts. This project focuses on the three cheloniid sea turtle species commonly seen in Virginia, which are the loggerhead sea turtle, Kemp’s ridley sea turtle, and green sea turtle (Hager 2014).

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  • 6,910.62 KB
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Date Published:
  • March 1, 2019

Kemp’s Ridley Tagging and Tracking in Chesapeake Bay and Costal Waters of Virginia: Final Report

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  • 285.40 KB
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Date Published:
  • June 1, 2017

The goal of this report is to provide the United States (U.S.) Department of the Navy (Navy) with the necessary data to help identify seasonal areas where Kemp’s ridley and green turtles are likely to occur in order to inform Navy environmental planning efforts.

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  • 1,296.69 KB
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Date Published:
  • February 1, 2022

In 2013, under an inter-agency agreement (IAA) between the United States Navy and the National Oceanic and Atmospheric Administration (NOAA), NOAA began conducting in-water surveys to record and quantify observations of marine turtles around the Mariana Archipelago. When observed, attempts were made to hand-capture turtles and equipthem with satellite tags in an effort to better understand their spatial ecology.

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  • 349.81 KB
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Date Published:
  • February 1, 2021

The United States Navy developed monitoring questions for the Mariana Islands Training and Testing (MITT) study area under the Mariana Islands Range Complex Monitoring Plan (MIRCMP), including questions specifically related to marine turtles as required under the Endangered Species Act (ESA) of 1973. To support the needs of the U.S. Pacific Fleet Environmental Readiness Office, the Marine Turtle Biology and Assessment Program (MTBAP) of the National Oceanic and Atmospheric Administration (NOAA) has been conducting research on marine turtle abundance and spatial-temporal ecology in the nearshore waters of Saipan, Tinian, and Guam since 2013, under a series of Interagency Agreements (IAA).

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  • 674.99 KB
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Date Published:
  • January 1, 2024

Understanding the spatio-temporal movements of animals is an integral component of wildlife conservation and management. Sea turtles are species of conservation concern and satellite telemetry is a primary research tool used to study their movements, providing high accuracy location data in near “real time,” thus facilitating rapid identification of movements and key habitats.

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  • 5,706.75 KB
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Date Published:
  • January 1, 2020

Understanding the spatio-temporal movements of animals is an integral component of wildlife conservation and management. Marine turtles are species of conservation concern and satellite telemetry is a primary research tool used to study their movements, providing high accuracy location data in near “real time”, thus facilitating rapid identification of movements and key habitats.

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  • 5,020.67 KB
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Date Published:
  • September 19, 2024

This report presents a geographic information system (GIS)-based overview of the sighting records obtained during marine species monitoring effort (a total of 12 U.S. Pacific Fleet-funded surveys) to date in the MIRC. Also included are incidental marine mammal and sea turtle sightings made since 1965 on non-dedicated surveys in the region.

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  • 14,571.64 KB
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Date Published:
  • February 1, 2013

A long-term goal of this research is the evaluation of the population status of each cetacean stock. This includes producing population abundance estimates using mark-recapture techniques. The first step in the process is the creation of species photo-identification catalogs, which began during the summer of 2012

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  • 2,353.37 KB
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Date Published:
  • March 2, 2017

The Pacific Islands Fisheries Science Center’s (PIFSC) Cetacean Research Program (CRP) has been conducting visual surveys and long-term acoustic monitoring for cetaceans in the waters surrounding Guam and the Commonwealth of the Northern Mariana Islands (CNMI) as part of an ongoing effort to develop a record of cetacean occurrence in the region. Visual surveys have been conducted aboard small boats (7.6-12.2 m) since 2010 off the southernmost islands of the Mariana Archipelago (Guam, Rota, Saipan, Tinian, and Aguijan). These surveys include the collection of photographs for individual identification, tissue samples for genetic analysis of population structure, and the deployment of satellite tags for assessment of individual movements throughout the broader region

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  • 2,999.73 KB
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Date Published:
  • January 31, 2013

The U.S. Navy developed the Mariana Islands Range Complex (MIRC) Monitoring Plan to provide required monitoring of protected species under the Marine Mammal Protection Act (1972) and the Endangered Species Act (1973). Of the 5 species of sea turtle associated with the MIRC this interim report provides preliminary data on the habitat and movements of green turtles (Chelonia mydas) and hawksbill turtles (Eretmochelys imbricata) in the nearshore waters of Saipan, Tinian, Guam – and the waters in between during migration.

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  • 1,200.48 KB
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Date Published:
  • January 15, 2016

This report summarizes field research activities conducted in November 2015 by the PIFSC Marine Turtle Biology and Assessment Program (MTBAP), in collaboration with local partners on Saipan and Guam

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  • 924.60 KB
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Date Published:
  • May 1, 2014

There are two questions from the FY13-15 Monitoring Plan that primarily guide this project. First, are there locations of greater cetacean and/or sea turtle concentration around Guam, Saipan and Tinian? Second, what is the occurrence and/or habitat use of sea turtles in areas that the Navy conducts underwater detonations?

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  • 1,874.51 KB
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Date Published:
  • September 1, 2015

Sea Turtle Tagging in MIRC (Progress Report) -2014 progress report

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  • 2,020.53 KB
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Date Published:
  • December 15, 2016

This report summarizes field research activities conducted between 23 October and 24 November 2016 by the PIFSC Marine Turtle Biology and Assessment Program (MTBAP), in collaboration with local partners on Saipan and Guam

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  • 2,422.75 KB
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Date Published:
  • January 31, 2019

The overall objective is to collect field data that will enable the Navy and the NMFS to better understand the distribution and habitat use of sea turtles in Guam and the CNMI.

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  • 3,376.54 KB
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Date Published:
  • January 31, 2018

The Marine Turtle Biology and Assessment Program (PIFSC, NOAA Fisheries), together with local partners, conducts marine turtle surveys and in-water captures of green turtles (Chelonia mydas) and hawksbill turtles (Eretmochelys imbricata).

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  • 3,653.04 KB
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Five Decades of Marine Megafauna Surveys from Micronesia. Martin, S.L., K.S. Van Houtan, T.T. Jones, C.F. Aguon, J.T. Gutierrez, R.B. Tibbatts, S.B. Wusstig, and J.D. Bass. Frontiers in Marine Science. 2016. :116
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Date Published:
  • August 1, 2007

The objective of Mariana Islands Sea Turtle and Cetacean Survey (MISTCS) was to conduct the first systematic line-transect visual survey of the waters around Guam and the Northern Mariana Islands and generate density estimates for those species which had adequate data.

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  • 6,725.14 KB
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Date Published:
  • August 31, 2011

The goal of this initial phase is to process and compile available data from visual surveys performed by both contractor‐led efforts as well as Navy in‐house ones, such that: 1. A GIS‐based summation of all survey tracks could be visualized 2. A geo‐referenced database of sightings can be queried to visualize sightings by species or survey variables such as observer platform, sea state, or season

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  • 2,020.33 KB
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