What was it that brought humans to travel the seas?

Found this off of google, "To reach the southern continent from the Southeast Asian mainland some 50,000 years ago, modern humans had to cross a 600-mile-long (970-kilometer-long) band of islands and at least ten ocean straits. ... To undertake such a lengthy crossing, human seafarers likely lashed together bamboo to make a simple watercraft."

Hope this helps, have a great day and stay safe! :) :D :3