This bryozoan is a well known fouling organism on boats and in harbors. The zooids entrap organic particles with their extended lophophores; they brood ova in their translucent, globular ovicells.
This female skeleton shrimp is climging to a red alga. She is brooding her young in the red dotted marsupium. Here five juveniles are climbing over their mother.
These skittish little worms will instantaneously retract their gill plumes into a calcareous tube following a shadow or other disturbance. The funnel-shaped operculum then blocks the tube's entrance. Gill plumes about 10 mm. Depth 10m.