The huge unidentified creature has prompted an international quest over what the creature could be - with several experts saying they have "never seen anything like it". John and Riley Lindholm came across the creature on a beach at Bundaberg in southern Queensland this week. The couple took several pictures of the sea beast, which they posted on social media, requesting help in identification. However, adding to the online theories, the fish had "vanished" when the couple returned to the spot the next day.

GETTY The huge unidentified creature has been rumoured to be an ancient prehistoric creature

The deceased creature was nearly two metres long and weighed 330-pounds, Mr Lindholm, who has spent his life around fish working as a charter skipper, said he had no idea what it was. He explained: "I've seen a lot of fish, and a lot of big fish, but I've never seen anything like it. "I thought it might have been a groper, but looking at the head shape it still may be a groper, but it just doesn't seem to fit with what other people up here have told me. "It was almost as tall as me — Riley's disappointed she didn't get me to lay down beside it so she could get a better photo. It was a big, big fish. "I've seen whales wash up on the beach but the size of this and the kind of fish it was, it took my breath away." He remarked that the discovery was one of the "most unusual things" he had ever come across.

GETTY Coelacanth — an ancient fish long thought to be extinct until it was discovered again in 1938

Riley Lindholm John and Riley Lindholm came across the creature on a beach at Bundaberg in southern Queensland

I've seen a lot of fish, and a lot of big fish, but I've never seen anything like it John Lindholm