The stars were shooting a video in Thailand when the tide went out and their boat couldn't come close to shore, forcing them to struggle through the water.
Ora tells Britain's The Sun, "The boat couldn't come to the shore and we couldn't get off the island. Everyone had left except me, Snoop, my sister, the camera guy and the lighting guy. I was like, 'Are we ever going to get off alive?'
"We had to walk all the way to the boat because the tide had gone out and the boat couldn't get to the shore.
"We had to wade through the sea to the boat. I don't know what was touching my toes! Slithery things, stones. I was holding Snoop's hand and he was squeezing it so tight I lost all circulation. It was hilarious."