I have totally failed as a parent. Again.
When I walk along the beach in the morning on holidays I like to collect shells.
On one of the ventures I returned with a mollusk shell which had opened but both sides were attached to each other.
My son, AGED 14, says "hey that looks like the sort of thing some small sea creature might have lived in".
What? On all his time on earth I have never told him what a shell is? And he's never asked?
Good grief. Anyway, I have no idea what I will do with my shell collection once the holiday ends but for now they make a great addition to the coffee table.