Spoiler: The answer is not "aliens." It's never aliens.

OCEANS
The earthquake-triggered waves are both destructive and unpredictable.
Strong winter storms in Ireland in 2013 and 2014 were able to hurl 600-ton boulders right out of the sea.
Researchers warn that “the complete feminization of this population is possible in the near future.”
The Ecoship is expected to set sail in 2020.