I found this book at a library sale some time ago and was drawn to the beautiful muted paintings by Dennis Luzak, who I am not familiar with. Unfortunately, I don't have much information on Luzak for you, except that he was born in 1939, lives in Conneticut, is a painter of portraits, landscapes and still lifes. Our Home Is The Sea was his first children's book. Luzak went to Hong Kong for this book so that he could get a firsthand impression of the city's "colors, noises, and crowds, and a clearer understanding of the culture." It seems he was also a teacher at Paier College of Art in Hamden, Connecticut.
To read an interesting article about Dennis Luzak:
Our Home Is The Sea
By Riki Levinson
Paintings by Dennis Luzak
E.P. Dutton, 1988