Why De Hoop is a perfect turtle release site – research potential
Declared an MPA in 1985, the value of De Hoop’s marine environment has been recognised for some time. More recently, though, the secret of De Hoop’s magic lies in what it has to offer turtle conservation along the southern coast of South Africa.
At first, there were occasional aerial sightings of foraging turtles in the coastal seagrass beds of De Hoop, followed by photos of these turtles spending time in the surf zone, and eventually stranded turtles washing up in the shallows. It became clear that turtles are regularly spotted in this area. In the last eight years, the Turtle Conservation Centre has received seven live green juvenile/sub-adult turtles from De Hoop, with the beloved Bob as the most well-known.
“One of these turtles, Litchi, was rescued from De Hoop in February 2021 and released off Cape Point 11 months later with a satellite tag. She headed straight for De Hoop and is still there 17 months later!” noted Tracy Whitehead, Turtle Rescue Network Coordinator.
In partnership with the South African Institute for Aquatic Biodiversity (SAIAB)’s Acoustic Tracking Array Platform (ATAP), the Two Oceans Aquarium Foundation’s Turtle Conservation Centre fixes small, frequency-emitting tags on released turtles. All along the South African coastline, there are acoustic receivers that capture these frequencies when the animal swims past.
One of the main benefits of De Hoop for turtle conservation is that, in this area alone, there are six active receivers. This is hopeful for future releases, as green and hawksbill turtles such as Amigo, Zelena, Coral, Siriti, and Amber tend to be coastal in the late juvenile stage. A coastal array of receivers is therefore likely able to pick up their movements successfully.
“In the years to come, we will hopefully gain invaluable insight into the coastal movement and behaviours of these sea turtles and their use of the De Hoop coastline,” said Talitha Noble.
What’s going on in De Hoop? Is it a regular foraging spot for young green turtles? Are they as abundant in other areas of the Western Cape? What about hawksbills – do they visit here? These are just some questions the research team hopes to answer in their turtle conservation work at De Hoop. |