Ecuadorian hermit crab few months, but species such as "Coenobita clypeatus" have a 23-year lifespan if properly treated and some have lived longer than 32 years. Similarly Ecuadorian hermit crabs have been known to live to over 30 years. In general, and despite their moniker, hermit crabs are social animals that do best in groups. They also require a temperature and humidity-controlled environment (ideally approximately 80% humidity or above and 75-85F), and adequate substrate to allow them to bury themselves while molting. Ecuadorian hermit crab The Ecuadorian hermit crab (Coenobita compressus) also known as the Pacific hermit crab is a species of land
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection the connection between natural selection and systems theory. On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection is the title of a joint presentation of two scientific papers to the Linnean Society of London on 1 July 1858: "On The Tendency of Varieties to Depart Indefinitely from the Original Type" by Alfred Russel Wallace and an "Extract from an unpublished Work on Species" from Charles Darwin's "Essay"