The image, which won the overall BMC Ecology and Evolution Award, shows the world's largest fish feeding on schools of different fish around it.

Speaking to RTP-Açores, the expert, who uses the Instagram handle 'Fontes_ecodive', explained that the photo represents "a kind of organised chaos, with hundreds of large tuna, which viciously attack a bait ball and in the background, a huge whale shark enters, which takes advantage of this feeding frenzy".