Does a painless death harm an invertebrate?

This paper explains a meaningful sense in which a painless death can be a misfortune for an invertebrate. The account presented is a logical implication of bringing together two distinct pieces of theory: the deprivation account of the harm of death and the biocentric ethical theory developed by the New Zealand philosopher, Nicholas Agar. Combined, the two theories support the following thesis: death harms an invertebrate because it deprives the individual of future biopreference satisfaction.