Float
Seawater
Glass
incubator
Seawater out te t -t
Reservoir b
Outlet
screen
Header tank
green algae
- containing
Non-return
*- valve
Wooden
freshwater
- bath with
cooling coil
T:wKt
- + To mains
FRONT VIEW
/& c d y : f e e d
Inlet
SIDE VIEW OF INCUBATOR
FIQ. 6. Closed sea-wet-% circulation for rearing plaice: Loweatoft, 1967. (After
Bhelbourne ~l d., 1968.)