Where did the green 'alien eggs' come from? Scientists baffled by UFOs (unidentified floating objects) that washed up on a Sydney beach

Beach-goers describe green 'alien hairballs' washed up on a Sydney's Dee Why Beach

The strange round objects are thought to be a rare type of living algae, brought ashore by warmer weather and rough conditions

Scientists think the algae might form into balls to protect itself from hungry fish

By May Slater for Daily Mail Australia

Visitors from outer space or a natural phenomena? Surfers and early morning walkers were stunned to find thousands of 'alien eggs' on a Sydney beach this weekend.

Locals in Dee Why, on the city's North Shore, reported seeing a large number of the strange objects which had washed ashore overnight.



But rather than the green spheres being something from another planet, scientists explained they were a type of sponge-like seaweed that forms egg shapes possibly to protect themselves from predators.

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