The greatest threat to marine life is plastic waste. Human dependence on plastic is slowly becoming redundant as a plethora of biodegradable plastic alternatives are available.
The Two Oceans Aquarium Education Foundation work hard to prevent marine animals from dying unnecessarily. This task has proven difficult with the amount of plastic waste that ends up polluting our shores and coastline and inevitably consumed by animals.
In June, the Foundation’s Turtle Rescue Network received a call from a Grotto Bay resident who found an endangered green sea turtle entangled in ghost fishing lines. The animal was swiftly transported to the sea turtle rehabilitation centre at the Aquarium.
Estelle, a Grotto Bay local, was paying respects to her late husband near the sea when she spotted what she believed to be a dead sea turtle tangled in a discarded fishing.
The turtle was named Marcel and weighed approximately 5kg with an estimated age of about 3 years. Green sea turtles are endangered, and ghost fishing nets, like the one that entangled Marcel, are by far one of the main dangers that face these animals once they have outgrown their hatchling phase.
Upon arrival at the rehabilitation centre, Marcel was given basic stabilising care and his wounds were inspected. Unfortunately, his back flipper, where the net had wrapped around him, had had its blood flow completely cut off and was entirely gangrenous.
Two Oceans Aquarium veterinarian Dr Brandon Spolander, together with the conservation team of the Foundation, immediately set about to amputate the necrotic flipper – something that was necessary if this turtle was going to survive.
Sea turtles can still be highly mobile and have a good quality of life in the wild with only three flippers, particularly if the removed flipper is a back one, as was the case for Marcel.
The young turtle was named Marcel in remembrance of Estelle’s husband.
‘Although the surgery went according to plan, and we were initially optimistic about Marcel’s prospects for successful recovery and release, this little turtle did not wake up from anaesthesia, despite seven hours of ventilator and post-operative care. As is the case with any life-saving surgery, there is always the risk that the patient does not recover, and this risk applies to animals too. It’s always sad to lose a patient, but we know the veterinary team made the right call to amputate the flipper to control infection,’ the Aquarium said in a statement.
‘Marcel’s story makes me super sad, because despite him being an incredibly strong turtle and despite us doing our best to try and help him, we as humans gave him too many battles to face. Turtles just can’t do it, they are strong but they can’t win against the burdens we put on them by polluting the ocean,’ said Talitha Noble, Two Oceans Aquarium Education Foundation Conservation Coordinator
A post-mortem examination was conducted on Marcel the turtle, to determine the cause of death, and it was found that his gut was already necrotic – the infection had already spread from his flipper and the damage was too extensive for this turtle to ever recover.
This autopsy also revealed another sad problem – Marcel’s stomach contained 67 pieces of plastic – bits of hard microplastic, pieces of rope, clothing fibres and plastic shopping bag fragments. Although ingested plastic was not the cause of death in the case of Marcel, the sheer quantity of plastic we found was alarming. These must have been fragments of plastic that he had consumed along the South African coastline before becoming entangled in the ghost fishing net.
Little Marcel suffered from both of the greatest risks that sea turtles face in our oceans: ghost fishing nets and plastic pollution. His death was completely unnecessary, and preventable.
Marcel’s stomach contained 67 pieces of plastic – bits of hard microplastic, pieces of rope, clothing fibres and plastic shopping bag fragments.
Making a difference:
Globally, the call to reduce and eliminate common plastic litter items that end up in the ocean is growing. Initiatives, like Plastic Free July, which call on consumers to become more aware of the choices they make, are often championed by sea turtle mascots – these animals really are the ocean’s best ambassadors when it comes to plastic pollution, and they are also, unfortunately, among the worst-hit victims.
Over the last decade, joint efforts between the Two Oceans Aquarium and the Two Oceans Aquarium Education Foundation have resulted in the successful rehabilitation and release of more than 600 endangered sea turtles, and have bolstered a far larger sea turtle conservation programme which was initiated by world-renowned conservationist Dr George Hughes in the 1960s.
The Two Oceans have many turtle rehabilitation success stories to tell, such as those of Yoshi and Alvi, and the hundreds of recovered hatchlings, but they also see about 20% of their little turtle patients not surviving, and this is mostly due to the negative impact of plastic pollution.
There’s one sad lesson they have learned in this time though: Almost every turtle they’ve helped rescue has eaten plastic.
It is their hope that the story of Marcel, the green turtle, will remind and encourage people to be more responsible when it comes to their use of single-use plastic items, and that reusable items are chosen instead of disposable options wherever possible.
If you would like to learn more about the work done by the Two Oceans Aquarium Education Foundation or make a donation to support sea turtle rehabilitation efforts, you can learn more here.
Image credits: Two Oceans Aquarium
