Azores : New direction

Update from our marine conservation volunteering holiday in the Azores archipelago, working on whales, dolphins and turtles

The early part of the week brought a change in the winds, and a change of direction for our surveys. We initially headed north to follow up a report of a humpback whale in the area. This was our first time north of Faial this year, and heading into a north-westerly wind and building waves made the search harder than we wanted, but the humpback was finally located – a favourite species for many.

Staying with it brought more challenges, and having briefly lost it, the team spotted what we initially thought were the characteristic white pectoral fins in the waves, but this turned out to be a random sighting of Risso’s dolphins – doing their best to distract us. They achieved this briefly before the humpback was re-found and ID photos secured.

Subsequent surveys and sightings brought more dolphins in the form of common and bottlenose, the latter being less frequently sighted, but have now been located by all three expedition groups. So more dorsal fin ID images to process and catalogue.

We also spent a day south of Pico (very familiar territory) tracking sperm whales. It is still surprisingly easy to lose these magnificent beasts, as they can dive for 45 minutes. This gave us an excuse to deploy our hydrophone – a sophisticated underwater microphone – so we can listen in on the underwater world, and hopefully locate sperm whales and other species. It wasn’t as effective as we hoped, but our lookouts were able to locate more whales – with ‘eyes all around’.

Using the hydrophone kit was timely, as we welcomed Sarah Kather for dinner. She studied sperm whale vocalisations for her Master’s Thesis (at the University of the Azores) and gave a fascinating insight into the importance of sound-based communication (and noise pollution) for various cetacean species.

Amongst all this, Lisa also managed to match some of the sperm whale flukes documented from our earlier sightings, showing three individual females had been repeatedly recorded up to ten times over a sixteen year period. This further highlights the importance of the Azores to this species.

Fingers crossed for our final days on the 2025 expedition.

Update from our marine conservation volunteering holiday in the Azores archipelago, working on whales, dolphins and turtles