If you're planning to vacation at a Texas beach this summer, you may come home with an odd, creepy, seemingly unexplainable souvenir.

They're harmless ... as harmless as plastic ocean litter can be anyway ... they're small and they have a very unique look after being through wind, rough currents, weather and getting scraped by sea salt. Unexplained piggy banks, of unknown origin, are washing up on Texas beaches. Again.

Port Arthur, Corpus Christi, Galveston, Bolivar and Sargent are among the locations these colorful little porkers are popping up. They're all over the place and nobody has a definite idea as to their origin. See a pic here.

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A biologist with the Harte Research Institute named Jace Tunnell took to Facebook hoping for an answer. His post generated a few theories ...

The most likely explanation seems to be that a cargo container was lost near Florida or maybe in the Gulf. (The actual name of the Gulf is up to you - could be Mexico, America or Texas. I prefer Texas myself.)

How Long Has This Been Going On?

That explains them making it to Texas but they have also been found on beaches in freakin' Hawaii. That one, found in 2017, was traced to a plastics manufacturer in Guatemala while others that were coming ashore between 2001 - 2004 seemed to have Cuban roots.

Cuban Drug Connection?

At the same time they came ashore, so did a bunch of measured dose inhalers with the name "MediCuba" on them. It seems likely damage done by Hurricane Michele was responsible for those things and, (at least some of), the pigs setting sail.

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Gallery Credit: Brad Elliott

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