This bizarre sea creature with hundreds of moving tentacles baffled locals after it washed up on a beach. The mystery marine species - which resembles a huge piece of sea weed - washed up on the shore in Kien Giang province, southern Vietnam, on July 29. A local tour guide scooped it up and placed it on a green plastic table inside a nearby home where residents gathered to look. Footage shows the dark brown alien like creature twisting and turning. It has a star shaped body in the middle with several branches spiralling out from the centre. On each branch are dozens more smaller tentacles all moving around in different directions.