Signs in the Oceans, Mountains, Rivers, Roads and Stars
Allah tells;
وهو الذي سخر البحر لتٲكلوا منه لحما طريا وتستخرجوا منه حلية تلبسونها وترى الفلك مواخر فيه
And He it is Who subjected the sea (to you), that you may eat from the fresh tender meat, and that you bring forth out of it ornaments to wear.
And you see the ships plowing through it,
Allah tells us how He has subjected the seas, with their waves lapping the shores, and how He blesses His servants by subjecting the seas for them so that they may travel on them, and by putting fish and whales in them, by making their flesh permissible to eat - whether they are caught alive or dead - at all times, including when people are in a state of Ihram.
He has created pearls and precious jewels in the oceans, and made it easy for His servants to recover ornaments that they can wear from the ocean floor.
He made the sea such that it carries the ships which plow through it. He is the One Who taught mankind to make ships, which is the inheritance of their forefather Nuh. He was the first one to travel by ship, he was taught how to make them, then people took this knowledge from him and passed it down from generation to generation through the centuries, so that they could travel from country to country and from place to place, bringing goods from here to there and from there to here.
Thus Allah says:
ولتبتغوا من فضله ولعلكم تشكرون
that you may seek from His bounty and that you may perhaps be grateful.
for His bounty and blessings.
Allah says: