In 1913 Richard Platz threw a bottle into the Baltic sea. How long was it before it was found?   Answer here

Who owns the entire seabed of the UK?   Answer here

How far can a green sea turtle swim in a month?   Answer here

How high does a wave have to be in order to be called a 'freak wave'?   Answer here

How large are the eyes of a Colossal Squid?   Answer here

By how much do scientists think the sea level will rise by the end of this century?   Answer here