I chunk many of my shells in the tiny ponds around the house (not too many though, they only range from 15 to 70 gallons). Calcium dissolves back into the water and tiny animals get a free meal, bolstering the bottom of the food chain.
Also used to throw a shell or three in my fish tanks so the snails could pull dissolved calcium.
Lobster shells really should go back in the sea. Recycle that calcium (?).
I chunk many of my shells in the tiny ponds around the house (not too many though, they only range from 15 to 70 gallons). Calcium dissolves back into the water and tiny animals get a free meal, bolstering the bottom of the food chain.
Also used to throw a shell or three in my fish tanks so the snails could pull dissolved calcium.