(VIDEO: Researcher Al Dove collecting a blood sample. Video by Dr Simon Pierce)
DS: What were some of the challenges encountered when doing underwater ultrasounds? How did the team overcome them?
An enchanting and ecologically unique place, immortalized by Charles Darwin’s seminal work on evolutionary biology in 1859, the Galápagos Islands hold a revered spot as one of the truly magical locations of the world. During pandemic times, when stillness and quiet replaced the cacophony of tourists, it seemed even more captivating. Brandi Mueller reports.
Although manta rays are readily capable of long-distance movements of hundreds if not thousands of kilometres, most populations appear to be philopatric (tending to return to or remain near a particular site or area—ed.) with few examples of long-distance dispersal.
Oceanic manta rays, the largest ray species, were listed as threatened under the U.S. Endangered Species Act in 2018. In 2019, their threat category increased from vulnerable to endangered on the International Union for the Conservation of Nature’s Red List.
“You’re crazy; I don’t get in the water with bitey things!” The announcement of my impending great white shark trip drew a variety of such responses from horrified friends. The undisputed bad boys of the shark world, great whites are the largest of all predatory sharks, reaching lengths of up to 6m and weighing in at over 2,000kg.
Rising out of the depths, a shape emerges from the shadows, methodically swimming in a wide arc. The outline is unmistakable, as it continues to climb and inch closer at every turn. With one last pass, seemingly in slow motion, I am struck by the sheer enormity of the creature in front of me.
Seen from space, Isabela Island—the largest island of the Galápagos archipelago— reminds me of a giant seahorse facing the great blue yonder of the Pacific Ocean. As one approaches land, the cap of thin white clouds dissipates. Isabela’s majestic landscape is a perfect alignment of shield volcanoes, rising above 1,000 metres, which stretches from the southeast to the northwest. Among them, Wolf Volcano reaches 1,700 metres.
Unlike Max in the children’s book by Maurice Sendak, Where the Wild Things Are, I hadn’t worn my wolf suit, or made mischief of one kind or another. I hadn’t been sent to my room before it transformed into an island of magical monsters only reachable after a year of sailing.
I wouldn’t want to spend that long on a boat, so I behaved(ish) and looked forward to being on Galápagos and spending my nights tucked up on dry land.
There is a recently developed term making its way into common use amongst the wider dive community, and that term is, citizen scientist. The science community is waking up to the fact that the common man and woman are valuable resources for acquiring many missing pieces in the jigsaw puzzle that is marine research, particularly for migratory species
“Sui Generis” is the most appropriate way I find to describe the Galapagos Islands. A place where the intruder is the human being. A place where many of its inhabitants are animals that exist only in this small piece of the world. A place where evolution seems to have been suspended at some moment in time. A place where we can feel like pioneers in each corner.
