How many trash islands are there?

What types of rocks are most likely to form near an oceanic or continental rift zone? How many nautical miles from Hollywood FL to Bimini Island? What did ships' captains routinely do upon outbreak of disease on slave ships? What are the Russian seas with four letters? In their journey westward Lewis and Clark traveled the furthest distance on which river? What colour are the gondolas painted in Venice? What does the french words coeur de pirate mean? How many nautical miles from Anacortes to Barkley sound? Where is the golden pot in poptropica time tangled? What happens to ships that go near Charybdis? What is the name of the bedroom on a ship? How much did sir francis drakes trip cost? What did the Cpr navvies do? Country with most fjords? What instructions does Odysseus give his shipmates as they prepare to deal with the sirens? Prince Henry was an early explorer for who? When did Frederick de houtman sail to Australia? What finally convinces Odysseus to resume his journey? What was cabeza de vaca's dream? What was the purpose of Jacques cartier's main journey?