I have scales but no gills, keys but no locks. I can span the whole world while stuffed in your pocket. Bring my brethren together and you’ll call us a titan. What am I?

I guide people, but don't use words, I sit at shore and never get up. What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I hold your gold, and lend you some, and line the river where waters run. You may lean on me or build upon my side, What am I, with meanings far and wide?

I’m not just one, but many you see, Scattered like jewels upon the sea. Though each of me stands on its own, Together, we form a watery zone.