Both had experience in pāua diving, and McPhee had been honing his skills with more experienced divers such as Ward, his sister, Lauren Buckingham, of Waimate, said.
"He loved being in the ocean, ever since he was a little boy down the family crib in Kaka Point. He'd give everything a go, and give it full throttle."
She described McPhee as a "lovable, mischievous" person.
"Loyal was the biggest word for Mitch, with a huge heart."
Ward's sister, Karen Ward, of Ōmārama, said he was a "proud dad" and much-loved family man, leaving behind wife Deana and three school-age children.
"He'd pull your leg, but at heart he was a soft soul - like a giant teddy bear who was always ready with a hug."
She said Ward was not only familiar with Purakaunui Bay, but also highly safety-conscious.
"It's just a mystery how they came to grief out there."
Senior Constable Murray Hewitson, of Owaka, said it was too early to speculate on the cause.