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- July 1, 2025
Beaked whales (Family Ziphiidae; Order Cetacea) are the least well-described group of marine mammals because they conduct very long deep dives, spend little time on the surface where they display cryptic behavior, and are difficult to identify due to the similarity between species. Beaked whales are also known to be susceptible to high-energy sound sources in the ocean (e.g. seismic research, sonars used by military activities).
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- June 1, 2014
This report summarizes information from 24 U.S. Navy-funded aerial surveys of pinniped haulout sites in the inland waters of Washington State conducted between March 2013 and February 2014 by Washington Department of Fish and Wildlife.
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- April 1, 2014
During this survey, the visual team surveyed 4,504 kilometers (km) of ‘full-effort,’ which included 349 km of ‘transit-effort.’ There was an additional 375 km of ‘fog-effort’ (transect and transit). Based on total effort, there were 802 sightings (1,998 individuals) of 13 confirmed marine mammal species, with an additional 162 sightings (228 individuals) of unidentified cetaceans and pinnipeds (including those recorded on transit and during off-effort mode).
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- August 5, 2009
Aerial surveys were conducted in conjunction with two US Navy (Navy) Major Training Events (MTE) involving mid-frequency active sonar (MFAS) and explosives in October (Oct) and mid-November (Nov) 2008 in the Southern California Range Complex (SOCAL) off San Diego, California. The purpose of this survey was to monitor potential effects or lack of observable effects of MFAS and explosives on mammals and sea turtles (MM/ST) during a MTE from 17-21 Oct and beginning one day after a MTE from 15-18 Nov.
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- August 6, 2025
The Alaska Fisheries Science Center (AFSC), NOAA Fisheries, with support from the U.S. Navy, conducted line transect surveys in Behm Canal and adjacent areas in the spring of 2023 and fall of 2024 to obtain estimates of density and abundance of cetaceans and information on marine mammal distribution and occurrence.
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Complete
Acoustic Monitoring and Evaluation of Tursiops Response to MINEX Training activities
Project Objectives
Assess ocurrence of Tursiops in the vicinity of the W-50 MINEX range. Assess vocal response of Tursiops to underwater explosions
Complete
Assessment of Marine Mammal Vocal Response to Sonar
Project Objectives
Develop analytic methods to evaluate the vocal response of odontocetes and mysticetes to sonar from navy training activities
Complete
Bottlenose Dolphin Occurrence in Estuarine and Coastal Waters near Panama City, Florida
Project Objectives
Determine species occurrence, and distribution, habitat use, and abundance of Tursiops in St. Andrew Bay and coastal waters adjacent to the Naval Surface Warfare Center, Panama City Division.
Current
Estimation of Received Levels of MFAS and Behavioral Response of Marine Mammals at PMRF
Project Objectives
Further our understanding of the Monitoring Questions: 1) What is the occurrence and estimated received levels of MFAS on 'blackfish', humpback, minke, sperm and Blainville's beaked whales within the PMRF instrumented range? and 2) What, if any, are the short term behavioral responses of 'blackfish,' humpback, minke, sperm and Blainville's beaked whales when exposed to MFAS/explosions at different levels/conditions at PMRF?
Complete
Guam Shore Based Visual Surveys
Project Objectives
Shore-based marine mammal surveys
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
Current
Marine Mammal Sightings During CalCOFI Cruises
Project Objectives
Determine what species and populations of marine mammals are present in Southern California and estimate the abundance and density across seasons
Current
Mid-Atlantic Offshore Cetacean Study
Project Objectives
Assess occurrence, habitat use, and baseline behavior of cetaceans in the offshore and continental shelf break region of the VACAPES OPAREA
Complete
NAS Patuxent River Marine Species Surveys
Project Objectives
Assess occurrence, seasonality, and abundance of Tursiops in the waters near NAS PAX River
Complete
Occurrence, Distribution, and Density of Marine Mammals Near Naval Station Norfolk and Virginia Beach
Project Objectives
Assess occurrence, seasonality, and abundance of Tursiops in the coastal waters of Hampton Roads military installations
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
Current
Pacific Islands Comprehensive Stranding Investigations
Project Objectives
Conduct comprehensive investigations of stranded marine mammals throughout the Pacific Islands with emphasis on the Hawaiian and Mariana Island chains. This includes conducting necropsies of stranded animals, collecting and archiving samples, conducting disease screening, genetic testing, and analysis of historical data. The objective is to examine stranding patterns and causes of death for marine mammals in the Pacific Islands.
Complete
Pacific Islands Marine Mammal Stranding Diseases
Project Objectives
Determine cause of death when cetaceans strand to ensure accurate public understanding of stranding cause, with focus on infectious diseases
Current
Pacific Marine Assessment Program for Protected Species (PACMAPPS) survey
Project Objectives
Identify species of beaked whales, odontocetes, and baleen whales that occur in the surveyed areas; Monitor marine mammal and sea turtle presence, distribution, and diversity in offshore waters; Develop a better understanding of marine mammal distribution, movement patterns, habitat use, population structure, and abundance; Develop reference library of visually-validated acoustic recordings of marine mammals.
Complete
Small vessel visual surveys in the Mariana Islands Range Complex
Project Objectives
Identify species of beaked whales, odontocetes, and baleen whales that occur in the Mariana Islands; Monitor marine mammal and sea turtle presence, distribution, and diversity in nearshore waters during key seasons (summer and winter); Develop a better understanding of marine mammal distribution, movement patterns, habitat use, population structure, and abundance; Develop reference library of visually-validated acoustic recordings of marine mammals.
Current
Visual Survey and Tagging of Hawaiian Odontocetes
Project Objectives
(1) define the spatial movement and habitat use patterns of species that are exposed to mid-frequency active (MFA) sonar (2) determine how these patterns influence exposure and potential responses
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.
Whales of Summer
June 10, 2024
In the mid-Atlantic, baleen whale sightings typically occur during the colder months, with peak activity in December and January. Sightings of humpback and right whales usually decrease by late March through April. While occasional baleen whale sightings, particularly of fin whales, happen during warmer months, large groups are uncommon as summer approaches. Pelagic surveys during this time often focus on odontocetes like sperm whales and beaked whales.
Kauai' Field Work Updates
February 16, 2024
Scientists from Cascadia Research Collective are leading a ~9-day field project off Kaua’i that started on February 11th.
Hatteras tagging wraps up for 2015
November 10, 2015
The finale of a successful field season.
Panama City Dolphin Survey Complete!
August 12, 2015
Bottlenose dolphin photo ID efforts in Florida
Great Day for a Mid-Atlantic Offshore Survey
April 20, 2015
Pelagic cetaceans and sea turtle sightings.
White “Leucistic” Bottlenose Dolphin Seen on Marine Mammal Survey
October 30, 2014
Leucism, like albinism, is a genetic condition that results in a lack of pigmentation in the skin.
The goals of this study were to determine seasonal abundance, habitat use, and distribution patterns of dolphins in St. Andrew Bay and adjacent coastal waters.
U.S. Navy explosive ordnance disposal (EOD) training events have the potential to affect marine mammals. The EOD team locates simulated underwater mines and “neutralizes” them using an explosive charge. Acoustic and visual monitoring for marine…
