Two East African boys, on a holiday from school, go fishing and head into trouble when their canoe is swept away. Picked up by four piratical but likable characters, they head into deeper waters, learn about the wonders of the sea as well as its dangers when they find some valuable ambari (ambergris). In spite of some avid Arabs, they manage to protect their find and are returned with it to the British Bwana who converts it into what will benefit them best (a tinga tinga- motor boat).... A friendly enough story with a fair amount of indigenous detail of life in a primitive native community, untouched by present day differences. Here the benevolent cooperation between black and white obtains to match the illustrations which are very black and white and uninviting. They are by Kiddell-Monroe.