The Bermuda triangle Crossword

proof at the site of tragedy
violent storms with very strong winds
risky and unsafe
pieces of the ship or plane that remain after it has been destroyed
strange
when strange events occur at the same time and are unexplainable
people working on a ship or plane
invented a new phrase
book bought by a large number of people
columns of water pulled up from the sea during tornadoes
the opposite of success
the opposite of shallow
a system to find out where ships or planes are
the opposite of survive
the meaning of Puerto Rico in Spanish
the opposite of reveal
The opposite of danger
consisted of of 5 US Navy aeroplanes
the natural gas said to be responsible for disasters at sea
leftover technology from this lost city