What made traveling by sea interesting in this era?

Where does a jaguar hut in a tropical rain forest? Why does the St Johns river flow north? How was the great sphinx made? What are the three factors of shallow ocean currents? When was Nitmiluk National Park created? Why are some national parks busier than others? Where is the Mandarin Museum in Jacksonville Florida located? How many walking miles is Disneyland? Where Each second about 150000 gallons of water pour over these falls on the US-Canada border? Tower of rock remaining after the top of an arch collapses? How many zoo vets are there in the US? Where did john sevier go to school? What were motte and bailey castles strengths and weaknesses? Why is windsor castle built of stone? What does big mouth mean? Which desert in South America almost never has rain? What is he name of the city north of the dead sea built in oasis about 8000 bc? What has mostly formed near the Indian Ocean? What is lubricant for food as it passes through the alimentary canal? Why are bridges used on the sonometer board?