We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Aquatic

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

What do Whales Eat?

Mary McMahon
By
Updated: Jun 04, 2024
Views: 104,822
Share

Whales are divided into two suborders — toothed and baleen whales — and each eats very different kinds of food. Toothed whales eat fish, squid, and other animals, while baleens eat plankton, krill, and other small creatures. Some studies have also suggested that human activities may have influenced whale feeding habits and the diet of whales, judging from reviews of historical evidence and studies of modern whales.

Toothed whales, such as killer whales and pilot whales, are equipped with a large set of teeth, as their name implies. These whales have a diet that includes schooling fishes, squid, and marine mammals such as seals. Some species eat other whales and dolphins. In the case of killer whales, also known as orcas, the animals often work cooperatively to bring down prey much larger than themselves. Researchers have even documented instances of killer whales going after blue whales, the largest mammals on Earth.

Baleen whales are filter feeders that eat things like plankton, copepods, small fish, and krill. They filter their food through a comb-like structure known as baleen. Blue whales, minke whales, and right whales are some examples. Gray whales filter the sediment on the ocean floor to access the small creatures that live there. Blue whales can eat up to 8,000 pounds (3,600 kilograms) of food every day during the season when they feed to store up energy reserves for the winter. In the winter months, the animals survive on their blubber.

The stored energy in the form of blubber is common to many marine mammals. In addition to being a source of energy when food is difficult to obtain, the blubber also provides insulation which protects the whales from extremely cold water, allowing them to travel to extreme latitudes. Blubber has also been of historical interest to humans as a source of fuel; whaling was once a worldwide industry which generated tremendous profits, primarily from the sale of this tissue.

Studies to determine what whales eat can be conducted in a number of ways. Historically, anecdotal evidence from whalers was used to learn more about the diet of whales. In the modern era, researchers can sift through whale excrement to extract mitochondrial DNA, which reveals the identity of the organisms the whale ate. This method has been promoted by researchers who do not want to kill whales to learn more about them.

Share
All Things Nature is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a All Things Nature researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
By anon997424 — On Jan 05, 2017

They also eat mysids and and isopods and plankton.

By wavy58 — On Jan 26, 2013

@DylanB – The only time I've ever heard of a whale attacking a person was when it was being held captive at a water park. It felt threatened and unhappy, so it lashed out.

I've never heard of people being attacked by whales at sea. Since people like to go out on boats to go whale watching, I doubt there is any danger.

By DylanB — On Jan 25, 2013

I did not know that whales would gang up to kill a bigger whale. That seems like cannibalism!

I would expect killer whales to eat seals and even dolphins. I am surprised to read that they eat their own relatives, even if they are very distant ones.

Do whales eat humans? If I'm ever out on a boat and surrounded by killer whales, I'd like to know if I should worry.

By OeKc05 — On Jan 25, 2013

@StarJo – Baleen is where the teeth on a regular whale would be. It looks like fringe, and the whales catch their tiny prey in it.

They bite down and strain out the water, and then they lick the baleen to get the food out of it. I've seen a video of this, and it's pretty cool.

By StarJo — On Jan 24, 2013

How exactly do baleen whales eat? I know that they filter their food somehow, but how does this work? Is the baleen in the throat or closer to the front of the mouth?

By Babalaas — On Aug 07, 2010

@ Parmnparsley- I think I have seen that same television special. I also watched a special about the colossal squid that the sperm whale eats. Fisherman caught a live specimen near Antarctica that was about 30 feet long and weighed about a half ton. Scientists were working to thaw and preserve the specimen to put on display.

It is amazing that a whale can eat something half its size. That would be like a person eating a four foot long 10 pound sub sandwich that can bite back.

By parmnparsley — On Aug 06, 2010

I watched a television special about sperm whales and what they eat. I was amazed to find out their favorite food is giant squid. The whales dive to incredible depths to find and hunt giant squid. The squid put up a heck of a fight, gouging the sperm whales with their tentacles. Evidence of their taste for squid can be seen on the ring marks that scar the faces of many sperm whales. The squid have also been found in the belly of dead sperm whales.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
Share
https://www.allthingsnature.org/what-do-whales-eat.htm
Copy this link
All Things Nature, in your inbox

Our latest articles, guides, and more, delivered daily.

All Things Nature, in your inbox

Our latest articles, guides, and more, delivered daily.