In an aquarium at Woods Hole in the summer of
1892, a conch was placed in the same tank with a female lobster,
which was nearly ten inches long, and which had been in captivity
about eight weeks. The conch, which was of average size, was not
molested for several days, but at last, when hard pressed by
hunger, the lobster attacked it, broke off its shell, piece by
piece, and made quick work of the soft parts.
—The American Lobster: A Study of Its Habits
and Development Francis Hobart Herrick, Ph.D., 1895