The off-bottom growth is significantly faster than those that are grown on-bottom and their shell has a different character. These oysters are spread on the tideland on firm substrate, placed in plastic mesh bags supported off the ground by lines, placed in various plastic mesh baskets off-bottom, or placed into trays. Once the single seed has grown to ½” – ¾” size, they are planted out to our tidelands. The cultchless seed is fed the same microalgae for 4-8 weeks before moving them to an upwell system in the bay, where they can then feed on natural algae. Some of our cultch seed is strung onto ropes that are supported off-bottom for accelerated growth where the substrate is soft or acidic. The shell with small oyster spat can then be scattered across the tideland for growth to maturity. Once this has been achieved the spat trap can be used in two different methods First By Setting the traps on a rack set up on the side of the waters edge so the Spat trap is out of the water at low tide and Under the water at High tide. Biological memories consist of the biological or genetic material needed to recolonize an ecosystem. The cultch seed is fed with tank-grown microalgae for 1-2 weeks before being moved to tidelands for 3-6 months of growth and hardening. First you need to identify a location where oysters spawn. Sydney Rock Oyster spat 40-50 bags of premium SRO spat from Port Macquarie. Currently, Rock Point uses a remote setting facility to assist acquired oyster larvae in settling onto both shell in plastic mesh bags (cultch seed) and in trays (cultchless single oyster seed). These are now allowed to grow to maturity and sold as single oysters. In years past, we sold tiny oysters that had naturally set on our gravel tideland as gravel seed. Single oyster seed is periodically available from our nursery. Bags of cultch oyster seed is available from our setting tanks or seasoned from one of our farms. It’s his own version of oyster farming, a way back to productive wild beds: The. He has 14 small baskets of live oysters and shells attached to buoys to keep them off the bottom. Pacific oysters are set on whole oyster shell in bags or on micro-cultch shell as singles in our remote setting/nursery facility. He pours Quikrete into egg cartons, then uses the concrete eggs to weigh down the baskets and offer a landing spot for passing oyster spat.
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