I hadn't planned to "row" a Five in a Row book but The little red lighthouse and the great gray bridge by Hildegarde Swift and Lynd Ward was an obvious choice.
There is so much to explore around this book-looking at why rivers flow was the first with some practical experiments.
The lighthouse keeper's lunch by Rhona and David Armitage.
Little Captain by Claudio Munoz which has a sea theme and a vague lighthouse connection.
I'm sure there are many more books about lighthouses for children but at this point I diverged from the theme and chose a couple of books that Mr Exuberance is asking for several times a day.
Duck to the rescue by Jez Alborough is the first.
The other is a lift the flap Duck book, again by Jez Alborough, Duck's Key where can it be?
This is linked to 5-a-Day books.