How deep is the ocean?, The ocean is about 3,600 meters deep., Who studies the ocean floor?, Scientists study the ocean floor., What do scientists use to go down to the ocean floor?, They use submarines., What is the name of the famous submarine?, The name of the submarine is ALVIN., Is ALVIN a big submarine?, No, it is small., How deep can ALVIN dive?, It can dive 4,500 meters deep., Can ALVIN reach the ocean floor?, Yes, it can., Who can ALVIN carry?, It can carry two scientists and a pilot., Is the ocean floor dark and cold?, Yes, it is dark and cold., Can scientists go out of the submarine?, No, they cannot., What do scientists take with ALVIN's robot arms?, They take samples of soil, water, or sea life., Does ALVIN do a great job?, Yes, it does a great job..

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