Water, a lot of it.

The little boat is so tiny on a huge expanse of water, at mercy of the weather and tides.   We are all little dots on the landscape.

The view reminded me of today's quote on the desk calendar, see extra.  Carl Sagan's book: 

Pale Blue Dot: A Vision of the Human Future in Space is a 1994 book by Carl Sagan. It is the sequel to Cosmos and was inspired by the famous Pale Blue Dot photograph, for which Sagan provides a poignant description. In this book, Sagan mixes philosophy about the human place in the universe with a description of the current knowledge about the Solar System. He also details a human vision for the future.[1]