1. What is the warmest ocean? The warmest sea? Pacific, Mediterranean Indian, Red Atlantic, Baltic Arctic, Sea of Japan

2. Scientists have found balls on the abyssal seafloor. What are they made of? plastic platinum manganese steel

3. Some oceans are continually growing. This is due to: tidal waves the revolving of the earth rainfall seafloor spreading

4. Corals are classified as __________________. shells plants animals rocks

5. What causes red tides? kelp plankton dinoflagellates diatoms

6. What are microscopic ocean animals called? ittybittyplankton meroplankton zooplankton phytoplankton

7. What animal was thought extinct until one was caught in 1938? oarfish megamouth shark giant squid coelacanth

8. What are tsunamis generally spawned from? hurricanes glacier calving cyclones deep ocean earthquakes

9. What is the topography of the ocean floor called? bathymetry aquaology seismology seafloor mapping

10. Sea snakes are the least venomous snakes in the world. True False