A mystery object that washed up on a New Zealand beach continues to baffle officials.
Environment Southland is trying to identify a 100-metre long object that washed up with an incoming tide on Te Waewae beach, west of Invercargill, this week.
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What is this beached sea monster?
An alien, a creature from the deep, or a beach Christmas tree? These are just a few guesses as to the mysterious object that washed up in New Zealand.
Deputy harbourmaster Ian Coard has appealed to the public for help with figuring out where the object came from and to who it belongs.
The object is man-made - long, black, made of some kind of plastic and with metal loops on either end.
Environment Southland is keen to identify the object and its owner so it can be claimed and removed.
On Friday, Mr Coard said the huge object posed a navigational hazard, but a local farmer had since helped move the pipe-like object well away from the tide line.
While Environment Southland was yet to identify the object, it was starting to narrow down the possibilities.
Mr Coard said a lot of people had contacted him suggesting it was used as part of a mobile fishing operation, possibly for salmon fishing.
![A mystery object has washed up on a New Zealand beach.](/web/20161218033629im_/http://www.theage.com.au/content/dam/images/g/t/d/7/p/o/image.related.articleLeadwide.620x349.gtd7rp.png/1481933108608.jpg)
Other suggestions of it being from a farm had been disregarded, due to the object's size.
"I think it's from the fishing industry. But what part, I have no idea."
![The object iis baffling experts and members of the public.](/web/20161218033629im_/http://www.theage.com.au/content/dam/images/g/t/d/7/p/q/image.related.articleLeadwide.620x349.gtd7rp.png/1481933108608.jpg)
Debbie Stone of the Marine Farming Association said the object did not look much like a mussel-farm boom, as some had suggested.
"Our out lines are more like ropes."
![People flocked to see the "Muriwai monster", which turned out to be barnacle-clad driftwood.](/web/20161218033629im_/http://www.theage.com.au/content/dam/images/g/t/8/v/w/7/image.related.articleLeadwide.620x349.gtd7rp.png/1481933108608.jpg)
However, many other experts and hobbyists wrote in to say it was a standard pipe, probably made of high density polyethylene - with the blue lines indicating it carried water.
Most suggested it was an airtight boom of some sort.
"It's like someone welded up a new water pipeline, was ready to pull it back through the hole they'd drilled for it and it ended up in the ocean? It must have been used for a boom for some bloody thing, if it was ever installed as a pipeline, the tapered cap would have been cut off," wrote reader Chris.
The hook at the end was likely used for towing the pipe while at sea.
"That pipe isn't from anywhere on land in Southland, that's for sure!"
Most agreed that it definitely wasn't used as on-land piping. Some suggested it could be part of a floating oil-containment boom.
Another mystery
This isn't the first mystery object to wash up on a New Zealand beach.
Earlier this month, a barnacle-covered object washed up on Auckland's Muriwai Beach.
People flocked to see the "Muriwai monster", which turned out to be barnacle-clad driftwood.
And in 2013, a similar long, pipe-like object was found on Whatipu Beach, also on Auckland's west coast.
The long object was also black but did not have any lines like the Southland object.
It is understood the mystery object remains at Whatipu.