"I don't do that sort of stuff."
He said the incident was being made into something it wasn't.
Ms Forbes said so far LeopardSeals.org had collected some witness statements, photos and video to give to the Department of Conservation, but she wants to gather any additional evidence.
She said any intervention by people could have unforeseen consequences on the animal's behaviour.
DoC spokeswoman Abi Monteith said the department had not received any footage as yet of the alleged incident. If footage is received, it will be reviewed and DoC will decide whether to prosecute or not.
Anyone who sees a leopard seal is reminded to stay 20m away and call 0800LEOPARD