What Is Oyster Cultch?

Cultch material consists of limestone rock, crushed concrete, oyster shell and other similar material that, when placed in oyster spawning areas, provides a substrate on which free swimming oyster larvae can attach and grow into oysters.

What is oyster spat?

Once oyster larvae permanently attach to a surface, they are known as spat. ... When oysters reproduce, they spawn tiny larvae that freely navigate the water column until they find an appropriate habitat with a structure to settle on. Once the larvae permanently attach to a surface, they are known as spat.

What is the meaning of cultch?

1 : material (such as oyster shells) laid down on oyster grounds to furnish points of attachment for the spat. 2 chiefly New England : clutter, trash.