The Amazing Mollusc
What a curious animal: it has only, one foot but 15.000 teeth. It has blue blood - and yet it's very common. Each individual is both male and female and they were formerly used to make cough mixture. What is it? Why, the ordinary garden snail.
Introduced by GWYN Richards
Producer DILYS BREESE (Bristol) (Repeated: Wednesday 9.5 am) Snail trail: page 8