Walking along the eastern shoreline of the Hamble estuary near Warsash today, we noticed an extraordinarily high number of cuttlebones. My photo below shows eleven which I collected over about 100 metres of tideline. I think I could have collected 50 at least during our 1-2 mile walk.
So there seems to be an unusually high population of cuttlefish around the Solent. Or at least, at the moment, a large number of cuttlefish around there are dying and shedding their cuttlebones.