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The starfish doesn’t have time for your tracking needs so don’t plan on following it for too long.
The Huffington Post reported that a study done by two biology students at the University of Southern Denmark uncovered that starfish have "the ability to squeeze foreign objects between their organs and back out of their bodies." They found this out when they tried to implant tracking microchips into a group of starfish and found the chips at the bottom of the tank after a few days.
"Every time we put a tag into a starfish, they rid themselves of the tag within a few days. It came out directly through the skin," the students said. "The starfish simply pushed it out through the skin at the end of one arm and then went on as if nothing had happened."
The students, Frederik Ekholm Gaardsted Christensen and Trine Bottos Olsen, used a method of dangling magnets over the group of 20 starfish and following that by doing the same thing with the microchip. But after doing that, the starfish would slide the chip through their organs and skin and eject it from a hole at the tip of their arm.
They added that this is the first time that researchers have observed a starfish ejecting items from its system.
Read more at The Huffington Post.
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