![Diagram of the life cycle of the New Zealand pea crab.](http://static.sciencelearn.org.nz/images/images/000/000/847/full/pea_crab_life_cycle_oversize20160302-30777-1w9wh02.jpg?1674165057)
The life cycle of the New Zealand pea crab. Juvenile and adult crabs live within green-lipped mussels, but the larval stages are free-swimming. Jessica Feickert (Leigh Marine Laboratory) recently identified the second and third zoea, megalopa and 1st juvenile stages for the first time.