Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

The present disclosure provides generally for a system and method for planting flora, fauna, and dispersing various organisms through drone delivery. The system may comprise of a drone with seedling box that may hold and drop the pods containing flora or fauna. The seedling box may hold the pods with the flora or fauna in them and at specific intervals drop the pod with the to flora or fauna. The seedling box may also hold various organisms or other materials and drop these organisms or materials when directed. A seedling box may comprise loading mechanism and deploying mechanism to facilitate accurate, timely deployment of the pods containing the seedlings. A pod may comprise a weighted tip with hollow cavity for seedling placement and a vertical rod for securing seedling during deployment. Where the system comprises uneven number of seedlings, seedling box may include counterweights to provide stability in configured flight patterns for duration of seedling deployment.

Disclosed herein are stackable cages for holding oysters, modular cages for holding oysters, floating platforms for deploying and retrieving oyster cages from a long line, and floats adapted to engage a plurality of oyster long lines and from which one or more oyster cages may depend.

Disclosed herein are stackable cages for holding oysters, modular cages for holding oysters, floating platforms for deploying and retrieving oyster cages from a long line, and floats adapted to engage a plurality of oyster long lines and from which one or more oyster cages may depend.

A curtain enclosure formed from a flexible, non-permeable membrane is positioned adjacent to a section of riprap or similarly configured structure that has been installed along a shoreline. The curtain is stretched around rigid elongate posts and extends outward into the water from the edge of the riprap to create an enclosed containment area formed between the interior of the curtain and the edge of the riprap. The bottom of the curtain is weighted to sit along the bed of the water body and resist movement in that position. Once the curtain enclosure has been formed, larval bivalve organisms, such as oyster larvae, are poured into the curtain enclosure, and thereafter the curtain enclosure is maintained in that position for a period sufficient to promote attachment and growth of the larvae on the riprap.

A curtain enclosure formed from a flexible, non-permeable membrane is positioned adjacent to a section of riprap or similarly configured structure that has been installed along a shoreline. The curtain is stretched around rigid elongate posts and extends outward into the water from the edge of the riprap to create an enclosed containment area formed between the interior of the curtain and the edge of the riprap. The bottom of the curtain is weighted to sit along the bed of the water body and resist movement in that position. Once the curtain enclosure has been formed, larval bivalve organisms, such as oyster larvae, are poured into the curtain enclosure, and thereafter the curtain enclosure is maintained in that position for a period sufficient to promote attachment and growth of the larvae on the riprap.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

An aquaculture system includes a pen configured to be disposed in a body of water and configured to at least temporarily store aquatic animals during development. A control system is configured to receive electric power from a power source and is configured to provide electric power to a pumping mechanism coupled to the pen such that the pumping mechanism provides a flow of water through the pen. A set of buoyancy tanks are coupled to the pen. A portion of the control system is in fluid communication with the set of buoyancy tanks and is configured to adjust a volume of fluid in at least one buoyancy tank to move the pen from a first position in which the pen is partially submerged in the body of water to a second position in which the pen is fully submerged in the body of water.

Systems and methods for cultivating or accumulating climate-focused marine target products are described herein. The target product may be microalgae, macroalgae, plankton, marine bacteria or archaea, filter feeders (such as oysters or clams), or crustaceans either for the purpose of bioremediation, eventual cultivation or for sequestering carbon dioxide; or the target product may be direct chemical or biological accumulation of carbon or carbon containing organisms. The system is primarily a floating apparatus designed to hold the target product in a region of the water column and in a spatial region of the water where it will best accumulate target product mass. In some embodiments the system is designed to achieve eventual passive sinking (transformation from a floating to sinking apparatus) into the deep ocean. In some embodiments, the system is equipped with purpose-chosen sensors to instrument and quantify the various biological and mechanical processes occurring onboard.