WATCH: Uneasy moment Orca sneaks up on ocean swimmers

A group of swimmers in New Zealand have had an unexpected close encounter after coming face-to-face with a bull Orca - otherwise known as a "killer whale".

Steven Morris from the Seamen Ocean Swim Squad in Tauranga was with his group on a two-kilometre lunchtime swim around Rabbit Island when they spotted fins in the distance.

"When I got around the back of the island I sort of swam into a lot of baby orca," he told Waikata Times.

A group of swimmers in New Zealand got up close and personal with a killer whale. Source: Waikata Times.
A group of swimmers in New Zealand got up close and personal with a killer whale. Source: Waikata Times.

"We thought this was all very exciting ... One of the fellas said, 'oh, they are just like big dolphins', but then a big one started towards us."

The group panicked and quickly swam back to shore, their body-worn cameras capturing the moment when fear set in.

The swimmers start racing back to shore. Source: Waitaka Times.
The swimmers start racing back to shore. Source: Waitaka Times.

"I want my mum!", one swimmer can be heard saying amongst much nervous laughter and swearing.

"Gets your heart pumping to see a fin that size coming towards you," another says.

The orca stayed approximately 10-15 metres away from the swimmers, Morris said.

"It's something you joke about a bit but you never imagine seeing it up close," he told Waikata Times.

"It hasn't put us off swimming and we were back out there again (the next day) - after scanning the horizon."