Working with partners and communities to recover this iconic population
The Southern Resident killer whale is a West Coast icon and one of NOAA’s nine Species in the Spotlight. While other killer whale populations are thriving, the Southern Residents are struggling to survive against multiple threats. We work to recover this culturally important West Coast species and the ecosystem we share through habitat restoration, salmon recovery, noise and disturbance reductions, limiting pollution, and more.
Our research program creates the scientific foundation for action. We monitor the population and learn about the threats to their recovery. These findings inform recovery actions that help reduce the severity of threats so the whales have adequate food, clean water, and a healthy ecosystem.
We don’t work alone. Countless groups and individuals along the West Coast and around the globe are taking action. Saving the Southern Resident killer whales requires all of us to do our part. Sign up for NOAA Fisheries email updates to stay up to date, take action by joining and volunteering with community groups, and read on to learn how you can help save the Southern Residents.
Southern Residents are intelligent and social animals. They form tight communities generally led by their mothers. They use a sophisticated series of clicks, whistles, and pulsed calls to communicate and hunt for Chinook salmon, their preferred prey. Southern Residents are also recognized for their cultural and spiritual importance to coastal tribes and communities.
During the 1970’s the Southern Resident population was substantially affected by the live aquaria trade. The population briefly rebounded in the 1990s, only to begin an alarming decline a decade later. In 2005, they were added to the endangered species list and currently number less than 80 individuals.
Learn about their plight in this visual story map
The entire population of Southern Resident killer whales as of January 2021.
This is an example of a suction cup tag near the dorsal fin of a Southern Resident Killer Whale. These tags suction to their skin, much like an octopus tentacle, and take measurements of sound exposure, behavior, and movement through the water column. These tags will stay on the whale for up to a day and are programmed to fall off on their own. Once they detach from the whales researchers must find them to record their data.
The latest science and information guides everything we do for these animals. We manage a robust research program and work with other researchers to find answers to the most pressing management questions.
Our scientists continue to uncover new information about the whales’ behavior, social structure, and health. We observe the whales on the water, under the waves, and from the air. We use the latest technology in the field and in the lab to gather evidence and test assumptions. These facts are shared with other researchers and provide the basis for management and regulatory actions.
Learn more about our Southern Resident research
The research identifies three main threats to their survival — vessel traffic noise and disturbance, health and contaminants, and prey availability. These factors compound each other. Ongoing research continues to reveal emerging threats to the whales, the extent of these impacts are still unknown.
Read on below to explore what we are doing with partners to better understand, address, and minimize these threats.
Southern Residents accumulate pollutants from the fish they eat. These contaminants affect their general health and ability to reproduce. We monitor the effects of pollutants and the health of individual whales. We use new technology to examine samples, measure body condition from drones, and use genetic tools to explore the population structure, mating patterns, and demographics.
Learn more about health assessment research
Vessel noise can interfere with the whales’ ability to eat, rest, and reproduce. We have implemented boating regulations to reduce underwater noise and vessel disturbances, spread the word to give the whales extra space, and researched the impacts of a noisy environment on the whales using digital acoustic recording tags.
Learn more about noise and disturbance research
Salmon are an essential part of Southern Resident killer whales’ diet, particularly Chinook salmon. Many salmon populations are also threatened or endangered. Salmon stock management and recovery are critical to the survival of these whales. Restoring and conserving salmon habitat helps recover salmon populations, and considering the whales’ needs in management actions, such as fisheries, will help protect prey availability for these whales.
Learn more about salmon management and recovery
Research continues to reveal new threats. For example, our genetic studies show that the whales’ small population size is likely to affect resiliency and compromise adult survival.
Learn more about our Southern Resident research
Today, the population remains near its lowest point in the last 30 years, increasing the urgency of recovery measures to reverse the decline in numbers.
We have worked with partners on a suite of actions to move the population towards recovery. Some activities will immediately reduce pressure on the whales, while others require ecosystem-wide shifts and will take longer to implement.
We love and value these whales. We seek to understand, share that knowledge, and protect the whales using the available tools. But we cannot recover these whales alone. Southern Resident recovery begins with you.
Check out and volunteer with our partners, learn more by exploring all the links on this page, and sign up for NOAA Fisheries email updates to hear more about Southern Residents!
Dereka Chargualaf, Fish Biologist with NOAA Fisheries West Coast Region in the California Coastal Office records data during a site visit on the Sacramento River.
Chinook salmon jump in frothy white water. Credit: Laura Mahoney/USFWS
