Introduced by Tony Soper and Jill Dawe

Geoffrey Weaver and Jill Dawe visit an area which has been taken over by marsh frogs, invaders from the Continent. Also: how storks have learned to live with us in parts of Europe; and a look at dolphin hunters: each year the peoples of the Solomon Islands catch dolphins for their teeth! Without these the young men cannot get their brides
(from BBC South and West)