A boundary fence spline to protect an oyster farm from marine predators such as octapus.
Painted wooden posts support a wire mesh that encloses the farmed area. Some posts have a sign that declares the oyster farm's registration number.
Stick-type oyster-farm beds can be represented by splines <kuid:368725:30115> 'oyster rack, tarred sticks, clean' and <kuid:368725:30116> 'oyster rack, tarred sticks, populated'.