• Magnus Lundborg

Shark-tagging in the Azores

Uppdaterat: 29 nov. 2021

In collaboration with Delma Watches

Just got back home from a great assignment in the Azores. I was there to photograph the tagging of blue sharks for Delma watches.

This project has really been something special. During my time in the Azores, I could see the strong connection between the locals and the ocean. Wherever you go, you hear people talk about whales, sharks and fishes. It’s a big part of their identity. So, to be a part of a project like this, in a place like the Azores, is truly an amazing experience.

The tagging is also different from what I’ve seen before. They have short-term tags that are only attached to sharks for 48-72 hours (as you can see in the photo above), and then they have long-term tags that are attached for a year.

When studying a shark for a short time, it’s very important to not change the shark’s behaviour. You can not fish it up and put a tag on it. The shark will be afraid and not act normal the coming hours and then the data will not show their true behaviour.

This team of scientists, however, are freediving next to the sharks and when they are close enough, they put the short-term non-invasive tag around the neck of the shark. From these tags, the scientists can see the depths, the speed and the temperature for a short time.

The other type of tag they have is the invasive ones that will be attached for a year. From these tags they can see how the sharks migrate. Blue sharks are traveling in groups of individuals with the same size and sex. And different groups are migrating at different times and to different destinations.

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