How to use "seas" in a sentence

As he gazed at the model, he wasn't transported back in time or lost in fantasies of high-seas adventure; rather, he was mulling over the recent developments in the Evans case

And looking across space, with instruments and minds more powerful than we can dream of, they see, at a distance of only 56,000,000 kilometres, a morning star of hope - our own warmer planet with its green land and grey seas, its cloudy atmosphere and its growing population.