Since Rainsford was found by the General so easily, the General wanted to have more fun and allowed him to go, which showed his smile. The General was a cunning man and he wanted to have more fun in the game so he gave Rainsford another chance to go and let him have another hunt. The General had something in mind and Rainsford thought he was going to die instantly and easily because he was up against the General.
Answer:
Similarities
Ocean and land both inhabit animals.
Water technically lies on land.
There are some animals that have not yet been discovered on land and in the ocean.
Differences
The ocean has not all been discovered
Land is solid, ocean is not.