Mars is in the Solar System, closer to the sun than Earth.
Dermatobranchus cymatilis is a species of sea slug , a nudibranch , a marine gastropod mollusc in the family Arminidae .. Arminidae. Arminidae. Dermatobranchus. Dermatobranchus. species. species. sea slug. sea slug. nudibranch. nudibranch. marine. marine ( ocean ). gastropod. gastropod. mollusc. mollusc