NAMMCO

NAMMCO NAMMCO is an international regional body for cooperation on the conservation, management and study of marine mammals in the North Atlantic.

The parties of NAMMCO — Faroe Islands, Greenland, Iceland and Norway — are committed to sustainable and responsible utilisation of all living marine resources, including marine mammals. Through the regional cooperation under NAMMCO, they aim to strengthen and further develop effective conservation and management measures for marine mammals. Taking into account the rights and needs of coastal commu

nities to make a sustainable living from what the sea can provide, such measures should be based on the best available scientific evidence and take into account the complexity and vulnerability of the marine ecosystem. The NAMMCO Agreement (signed on April 9, 1992) focuses on consolidating and advancing scientific knowledge of the North Atlantic marine ecosystem as a whole, and to understanding better the role of marine mammals in this system. NAMMCO is an Intergovernmental organisation with advisory mandate.

  Did you know harbour porpoises were a luxurious delicacy during the Middle Ages? The harbour porpoise is one of the mo...
15/05/2026



Did you know harbour porpoises were a luxurious delicacy during the Middle Ages?

The harbour porpoise is one of the most abundant and widespread marine mammals in the Northeast Atlantic. The species also has a generally coastal distribution, placing it near many human population centres. Therefore, it is no surprise that the species has historically served as a food source for many coastal communities, with records of the species being hunted by humans since the Mesolithic period (some 8,000 years ago).

However, an interesting fact is the reputation the species received during the Middle Ages, especially in England, where it became a luxurious delicacy among the higher classes. At the time, people considered porpoises to be fish, instead of mammals, meaning they could be consumed during Christian fasting days (Ash Wednesday, Good Friday, and Lent Fridays). It was often served on special occasions, such as in 1466, when the Archbishop of York, George Neville, held a large feast, serving 12 porpoises and seals.

Although hunting existed in the Middle Ages, harbour porpoises were often collected opportunistically from strandings along the coast and delivered to the nobility. It is not known how fresh the meat of these stranded porpoises was before delivery, but they were likely quickly salted to delay decomposition. By the 14th century, porpoise meat was so popular that the English king, Edward I, formally declared all stranded porpoises as belonging to the Crown.

However, by the start of the Modern Era (16th century), harbour porpoise meat gradually lost popularity in England, as noble tastes shifted to new diets.

Photo: Pixabay

A study by Celemín and colleagues, titled “Evolution and Organisation of MHC II Genes in Harbour Porpoises: Insights Fro...
12/05/2026

A study by Celemín and colleagues, titled “Evolution and Organisation of MHC II Genes in Harbour Porpoises: Insights From Long-Read Cetacean Genome Assemblies, Whole Genome Re- Sequencing and Locus- Specific Genotyping”, was published in the journal Molecular Ecology in June 2025.

The Major Histocompatibility Complex (MHC) is a region in a vertebrate animal's (animals with a backbone) genome (the species’ full DNA code) that allows their immune system to detect pathogens (microbes which cause diseases). The more diverse a species’ MHC genes are, the better its immune system will respond to diseases. Studying MHC genetic diversity provides crucial information to assess the health of a species and is a key factor in preparing management plans for the recovery of endangered wildlife.

The harbour porpoise has an endangered subspecies (the Black Sea subspecies) and a critically endangered population (the Baltic Sea population). This study assessed MHC diversity in harbour porpoises from six different regions, including samples from the threatened subspecies and population. It also analysed the MHC genes of 19 species of cetaceans (whales, dolphins and porpoises) and land mammals (pig, cow, and hippopotamus, all of which share ancestry with cetaceans), to understand the evolution and structure of MHC genes in harbour porpoises.

The authors found reduced MHC diversity in the endangered Black Sea subspecies, which makes them vulnerable to disease outbreaks. Thus, they recommend that extensive conservation and management measures be implemented for them. Similar concerns were expressed for the critically endangered Baltic Sea population, which also demonstrated low MHC diversity. However, too few samples from this population were used in the study to obtain reliable results. Therefore, further MHC studies are needed for this population, using larger sample sizes. Animals that are not fully healthy are less able to withstand stress from other pressures. Studies like this one are important, as they can highlight populations that require more immediate management action in the face of multiple anthropogenic stressors.

Photo credit: Peter Duley

This week’s   isn’t especially fun, but it is an important one.There has been a lot of discussion lately about whale, do...
08/05/2026

This week’s isn’t especially fun, but it is an important one.
There has been a lot of discussion lately about whale, dolphin, and porpoise strandings, and we would like to shed some light on what citizens can do if they encounter a stranded animal.

When whales, dolphins, or porpoises strand, these events can provide important information about ocean health, pollution, and disease. Reporting strandings helps scientists collect valuable data to understand potential causes, identify threats to marine life, and strengthen conservation efforts. In some cases, depending on the condition of the animal, timely reporting can even lead to rescue attempts.

⚠️ If you encounter a stranded animal, do not touch or crowd the animal and remember to contact local authorities so they can ensure it receives proper care and handling. In NAMMCO member countries these are the ways you can report a stranding:

🇫🇴 In the Faroe Islands, you can report a stranded marine mammal to the Faroese Museum of Natural History Tjóðsavnið email at [email protected]. When contacting the Marine Mammal Department, provide details such as location, coordinates (if possible), date, species, and condition of the animal. Including photos is very helpful. You can read about it on their website: tjodsavnid.fo/greinir/doglingur-upprikin-yviri-vid-strond-havn

🇬🇱 In Greenland, you can report unusual findings or abnormalities in marine mammals to the Pinngortitaleriffik, Grønlands Naturinstitut. Email details including the location, date, description, and photos, especially of any deformities, to Aqqalu Rosing-Asvid [email protected], with a copy to [email protected]. You can read about it on their website: natur.gl/rapporter-til-os/misdannede-dyr/

🇮🇸 In Iceland, you can report strandings through a form on the website of Hafrannsóknastofnun : hafogvatn.is/is/moya/formbuilder/index/index/hvalreki . Simply fill out the form with details about the location, date, species, and condition of the animal. Adding photos helps researchers gather more accurate data.

🇳🇴 In Norway, a new national register for stranded marine mammals has been established, allowing you to report strandings via dugnadforhavet.no/ . This site, coordinated by scientists from Havforskningsinstituttet , also guides you through reporting important details like coordinates, the animal’s appearance, and other observations. You can read more about the register in this article.

Your report could make a big difference for whale, dolphin, and porpoise conservation and research!

Ricardo’s time as NAMMCO’s intern has come to an end, and we’re grateful for his valuable contributions to the Secretari...
05/05/2026

Ricardo’s time as NAMMCO’s intern has come to an end, and we’re grateful for his valuable contributions to the Secretariat!

We're happy to announce that the 8th annual Marine Mammal Student Symposium was a success!The event, co-organised by the...
30/04/2026

We're happy to announce that the 8th annual Marine Mammal Student Symposium was a success!

The event, co-organised by the North Atlantic Marine Mammal Commission, NCLOS - Norwegian Centre for the Law of the Sea, and the Department of Arctic and Marine Biology, happened yesterday (29 April) at the Norwegian College of Fishery Sciences, with 15 people presenting throughout the day, and dozens of people attending both in-person and online.

We would like to thank all the co-organisers, presenters, attendees and student volunteers from the University of Tromsø who made yesterday's event possible.

Check out some of the photos from yesterday's symposium!

Applications are open until the 1st of May (Friday) for the NAMMCO Internship Programme!The internship offers students a...
27/04/2026

Applications are open until the 1st of May (Friday) for the NAMMCO Internship Programme!

The internship offers students and early-career professionals a valuable opportunity to gain hands-on experience in international marine mammal management, strengthen their communication and science outreach skills, and contribute to the work of NAMMCO – North Atlantic Marine Mammal Commission.

It provides valuable experience in:
🐬🦭 Learning about the management and conservation of marine mammals.
🔎 Staying informed on the latest research in the field.
🤝 Expanding your professional network.

It also supports the development of skills in:
📣 Communication and outreach
🗓️ Meeting and event organisation
💻📝 Report writing and website content editing

The position is full-time and based at the NAMMCO Secretariat in Tromsø, Norway. A monthly stipend is provided to help cover living expenses. Applicants must be from NAMMCO member countries (Faroe Islands, Greenland, Iceland, Norway) or from EU/EEA countries.

The next internship is expected to begin in autumn 2026.

Find the application form and further information in our comments section.

Only complete applications will be considered.

  Do you know what the most abundant seal species is in the North Atlantic?In the North Atlantic, the most commonly obse...
24/04/2026

Do you know what the most abundant seal species is in the North Atlantic?

In the North Atlantic, the most commonly observed seals are the grey and harbour seals, two species with broad distributions that often live near human communities. However, the most abundant species is the harp seal, an ice-associated seal that lives in the high Arctic, largely inaccessible to most human contact. They are, however, hunted by Arctic communities in Canada, Greenland and Russia, as well as by Norwegian hunters in the Greenland Sea.

The harp seal is estimated to total almost seven million animals, divided among three populations: The Northwest Atlantic (4.7 million individuals), the Greenlandic (around 427 thousand individuals) and the Barents Sea/White Sea populations (1.5 million individuals).

The harp seal’s large population numbers are currently among the highest levels observed over the last six decades. However, the species is currently categorised as “Near Threatened” by the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. This is mainly due to a significant decrease in pup production (newborn seals) observed in the last few years. This decrease is linked to a decline in sea ice cover, a requirement for harp seals to give birth and raise their pups.

Despite having the largest seal population in the North Atlantic, harp seals, like other species, are not immune to environmental changes. Monitoring and management of the species is crucial to ensure their conservation, and at NAMMCO, we contribute to such through our (joint with ICES - International Council for the Exploration of the Sea and NAFO) Working Group on Harp and Hooded Seals (WGHARP).

Learn more about the harp seal by visiting NAMMCO’s website: https://nammco.no/harp-seal/

Photo credit: Ann Harvey

This week the NAMMCO Secretariat is at the European Cetacean Society Conference   ! 🐋🐬 Three scientists from NAMMCO’s Se...
22/04/2026

This week the NAMMCO Secretariat is at the European Cetacean Society Conference ! 🐋🐬

Three scientists from NAMMCO’s Secretariat (Maria, Olof and Ricardo) are in Dundee, Scotland, attending the 37th Annual ECS Conference. You can find us at our exhibition booth, where we’ll be sharing insights into some of our ongoing projects.

In addition, Olof and Ricardo will be presenting posters on their research projects today from 17:40 to 19:00.

● Olof, Research Assistant at NAMMCO, will present his project “Mapping exposure to by-catch risk for marine mammals in the North Atlantic” (Poster 305 - upstairs).

● Ricardo, current intern at the Secretariat, will present results from his master’s thesis “Modelling cetacean distribution in the Cabo Verde archipelago” (Poster 43 - downstairs).

If you’re attending the conference, feel free to stop by, say hello, and have a chat with us!

Registration reminder!Two days left to register as a participant for the 8th Marine Mammal Student Symposium. Registrati...
21/04/2026

Registration reminder!

Two days left to register as a participant for the 8th Marine Mammal Student Symposium. Registration for presenters will close on 22 April (Wednesday) after 23:59, CEST time.

So, if you haven't registered yet, now is the time!

Find the registration form here: https://forms.gle/teMv2R7dMHTZtZPW8

  Have you heard about echolocation?Living underwater means vision is often not enough to navigate and be aware of one's...
17/04/2026

Have you heard about echolocation?

Living underwater means vision is often not enough to navigate and be aware of one's surroundings, as the environment is often dark and murky, with limited visibility. However, sound travels remarkably well underwater, faster and farther than in the air, making it very useful for navigation in this environment.

Echolocation, a technique widely used by toothed whale species (s***m whales, beaked whales, dolphins, and porpoises), allows them to explore the underwater world through sound. The technique consists of emitting high-frequency sounds that travel through water, hit an object, and bounce back to the whale as an echo, effectively working like a sonar.

The echolocation sounds that toothed whales emit are known as “clicks”. They are produced through vibrations inside the whale’s forehead, made by small structures called “phonic lips” or “monkey lips”. The phonic lips direct the clicks into a fatty organ called the “melon”, where the sounds are shaped into a narrow, forward-pointing pulse, before being emitted into the water column.

When the clicks’ echoes return, they travel through the whale’s lower jaw up to the inner ear and brain. The whale’s brain then processes differences in the echoes’ timing and intensity to detect an animal or object, its size, shape and distance, allowing the whale to “map” its surroundings. When targeting a prey item, the interval between clicks becomes shorter—the resulting sound is called a “feeding buzz”. Listening in on the types of clicks and buzzes toothed whales make can help us understand their feeding habits.

Learn more about whales by visiting NAMMCO’s website: https://nammco.no/whales-dolphins-and-porpoises/

Illustration credit: Uko Gorter/NOAA

We are pleased to announce the official programme for the 8th Marine Mammal Student Symposium!Additionally, we are exten...
16/04/2026

We are pleased to announce the official programme for the 8th Marine Mammal Student Symposium!

Additionally, we are extending the registration deadline for an extra week (22 April), so if you haven’t yet, you are still in time to register as a participant.

Find the link to the registration form in our comments section!

Adresse

Sykehusveien 21
Tromsø
N-9294TROMSØ

Telefon

+47 77687371

Varslinger

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