Another picture appears to show Meghan’s hand holding an elephant’s trunk.
The others showed the animals walking around and playing in the water.
The post was captioned: “Two years ago on World Elephant Day, The Duke and Duchess of Sussex joined Dr Chase to help in this conservation effort. Below, a few words from Mike and his partner Kelly at EWB:
“‘Today is a day to honor and celebrate the majestic elephant and to make a strong stand for conserving and protecting one of the world’s most beloved animals.'”
Fans gushed over the stunning pictures.
One person said: “Harry and Meghan you both are a great example of the change we all want to see in the world. You two inspire us to be as well.”
Another wrote: “Photos by the Duchess, this is incredible,” while a third added: “These photos are beautiful!”
Harry and Meghan will travel to Angola as part of their Autumn tour to carry on Diana’s charitable legacy with the HALO Trust, an organisation which removes debris left behind by war, in particular land mines.
Meghan and Harry’s tour will also include a visit to South Africa and Malawi.
The couple will visit Malawi as part of the Prince’s hopes of expanding the work of his Sentebale charity.
It’s been reported that palace aides are checking whether it’s safe for Meghan and Harry to bring their baby son Archie, who was born in May, on the trip.