National Geographic : 1980 Apr
SHORTCHANGED by nature, hermit crabs live their lives in hand-me-downs. From birth their survival depends on other creatures'shells. As a crab grows, it continually seeks a largerlodging, and to get it will often teara living mollusk from its shell. Already housed, these two crabs (below) have matingin mind. Elsewhere, two red rock crabs are well past the courtshipstage as they rub their belly plates together (lower left). Forseven days or more, love seems to satisfy hunger while the two mate. Strolling across an anemone, a diminutive butterfly crab (left) wears a shell that offers excellent camouflage againststony seabeds.