In other parts of the world, research focused on manta rays revolves around the collection of ID photos – images that capture the unique patterns and markings found on the ventral surface of each animal. Each photo is registered by date and location, thereby allowing researchers to track individuals over time.

These databases can reveal information on the make-up of populations, migration patterns and movements, while uncovering possible connectivity between regions and providing clues on their importance for different species. This information is crucial in order to effectively manage and conserve these rays.

We know now that Sicklefin devil rays are among the ocean’s deepest divers, but otherwise they remain a mystery to us. The presence of predictable aggregations at specific seamounts in the Azores is therefore highly significant, providing a unique opportunity to study these animals.