Hagfish Day
October 21
About Hagfish Day
Hagfish Day falls on Wednesday, 21 October 2026. The annual event celebrates the hagfish, a slime-producing, jawless deep-sea scavenger, and champions the wider cause of protecting marine animals that are overlooked because they are not conventionally attractive. It is an international day of education and good-humoured appreciation for the ocean’s most unusual residents.
How to Celebrate Hagfish Day
Hagfish Day is meant to be playful as well as educational, so there are plenty of light-hearted ways to take part:
- Make a batch of hagfish slime – Mix up a simple cornflour or gelatine slime at home or in the classroom to mimic the hagfish’s signature defence. It is a memorable way to explain how the real creature produces its goo.
- Learn the science of the slime – Read up on how hagfish slime expands so dramatically in seawater. Researchers are studying its threads as a model for sustainable, high-performance fibres.
- Send a “hagfish bouquet” – WhaleTimes, the charity behind the day, suggests sending friends a cheeky hagfish-themed greeting to spread awareness of unusual marine life.
- Watch deep-sea footage – Streaming video of hagfish feeding, knotting and sliming is widely available and showcases behaviour that few people ever get to witness.
- Run a classroom session – Teachers can build a lesson around hagfish to discuss food webs, scavengers and ocean conservation. The “beauty of ugly” theme sparks lively discussion among children.
- Adopt the “beauty of ugly” mindset – Pick an unloved species, research it and share what you learn online. Barreleyes, giant isopods and dragonfish all make excellent candidates.
- Support an ocean charity – Donate to or volunteer with a marine conservation organisation, especially one that protects less glamorous species and the habitats they depend on.
- Share on social media – Post a hagfish fact, drawing or video with the day’s hashtags to help the message reach a wider audience.
What is Hagfish Day?
Hagfish Day is an annual awareness day created to celebrate the hagfish and, through it, the many marine animals that rarely feature in conservation campaigns. It was founded by WhaleTimes, Inc., a non-profit ocean education organisation, to promote what it calls the “beauty of ugly”. The idea is simple but serious: less attractive and less well-known creatures are often just as vulnerable as the charismatic species that dominate public attention, yet they receive a fraction of the interest. The day is enjoyed by educators, families, aquariums and ocean enthusiasts around the world.
When is Hagfish Day?
Hagfish Day takes place on the third Wednesday of October each year, which means the date changes annually. In 2026 it falls on Wednesday, 21 October. Because the date is variable rather than fixed, it is worth checking the calendar each year. The table below sets out the dates for the next several years.
| Year | Date |
|---|---|
| 2026 | Wednesday, 21 October |
| 2027 | Wednesday, 20 October |
| 2028 | Wednesday, 18 October |
| 2029 | Wednesday, 17 October |
| 2030 | Wednesday, 16 October |
The History of Hagfish Day
Hagfish Day was established in 2009 by WhaleTimes, Inc., an ocean education charity. The organisation’s director, Ruth Musgrave, conceived the day after observing that conservation can resemble a popularity contest, with public sympathy and funding flowing towards photogenic animals such as dolphins, sea turtles and whales. Creatures that look strange, slimy or simply unfamiliar tend to be ignored, even when they play vital roles in their ecosystems and face the same pressures from pollution, habitat loss and overfishing.
The hagfish was chosen as the figurehead precisely because it challenges conventional ideas of what is worth saving. By rallying around an animal best known for tying itself in knots and smothering attackers in slime, WhaleTimes set out to make the point that every species matters. The day has grown to include a rotating cast of other unusual “stars”, among them the barreleye, the dragonfish, the giant isopod and the heteropod, alongside more recognisable but still vulnerable animals such as the Hawaiian monk seal and the rockhopper penguin.
Since its launch, Hagfish Day has been adopted by classrooms, science communicators and aquariums, helping to turn a once-obscure animal into an annual talking point. The “beauty of ugly” tagline has proved memorable, and the day continues to encourage people to look past first impressions when they think about ocean conservation.
Fun Facts About Hagfish
- Hagfish are ancient animals. Their lineage stretches back more than 300 million years, and they are often described as living fossils that have changed remarkably little over time.
- They are jawless. Hagfish belong to the group Agnatha, some of the earliest vertebrates, and feed using rasping, tooth-like plates rather than true jaws.
- Their slime is extraordinary. When threatened, a hagfish can release slime that expands to many thousands of times its original volume in a fraction of a second once it meets seawater.
- They tie themselves in knots. To clear away their own slime and avoid suffocating, hagfish twist their bodies into a knot and slide it along to scrape themselves clean.
- They are deep-sea scavengers. Hagfish feed largely on dead and dying animals on the seabed, often burrowing into a carcass and feeding from the inside.
- Their slime interests scientists. The protein threads in hagfish slime are being studied as inspiration for strong, sustainable fibres.
Why Hagfish Day Matters
Hagfish may not be cuddly, but they are essential. As scavengers, they help recycle nutrients on the ocean floor and keep the seabed clean, a role that supports the wider marine food web. Hagfish Day uses humour to deliver a genuine conservation message: protecting biodiversity means caring about the unglamorous species too, not only the ones that photograph well. If you enjoy marine awareness days, you might also like World Sea Turtle Day, which celebrates a more familiar ocean favourite.
Frequently Asked Questions
What is Hagfish Day?
Hagfish Day is an annual awareness day created by the charity WhaleTimes to celebrate the hagfish and to champion the “beauty of ugly”, encouraging people to value unusual and overlooked marine animals.
When is Hagfish Day in 2026?
Hagfish Day falls on the third Wednesday of October. In 2026 that is Wednesday, 21 October.
Who started Hagfish Day?
It was founded in 2009 by WhaleTimes, Inc., an ocean education organisation led by director Ruth Musgrave, to draw attention to less attractive but equally vulnerable sea creatures.
Spread the Word
Join the celebration and share your best hagfish facts, slime experiments and drawings on social media with #HagfishDay and #HagfishDay2026. Tag your friends and challenge them to embrace the beauty of ugly.
Related Awareness Days
- World Oceans Day – A global day dedicated to protecting the ocean and the extraordinary range of life it supports.
- International Sawfish Day – Another October date that shines attention on an unusual and endangered marine species.
- World Aquatic Animal Day – A day celebrating the welfare and conservation of all animals that live in water.
Links
- Visit the official Hagfish Day page from WhaleTimes
- Explore more awareness days at AwarenessDays.com
Featured image: Photo by David Clode on Unsplash.
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