A process includes microbially degrading harvested polyculture plant material to form a concentrated microbial biomass and providing the concentrated microbial biomass to an intermediary animal for consumption. The process may also be directed to producing a product animal which includes providing a growth area having an outlet for waste and providing a harvested plant material collection area having an outlet for degradation products. The process may also include providing a microbial growth system for producing a bacterial biomass and directing at least some waste from the outlet of the product animal growth area to the harvested plant material collection area. The process may also include directing at least some degradation products to the microbial growth system, directing some of the microbial biomass produced in the microbial growth system to an intermediary animal for consumption, and directing the intermediary animal to a product animal growth area.

[Problem] Under an underwater environment containing a high concentration of carbon dioxide having an anesthetic effect, prolonged anesthesia is performed on fish and shellfish in a safe and practically simple manner.

[Solution Means] Fine bubbles containing gaseous oxygen are brought into contact with the surface of a gill epithelial cell membrane of fish and shellfish to produce a partial pressure difference between [gaseous oxygen partial pressure][gill capillary dissolved oxygen partial pressure] exceeding a partial pressure difference between [water dissolved oxygen partial pressure][gill capillary dissolved oxygen partial pressure], and thus the amount of oxygen taken by a gill thin plate capillary is remarkably increased. Thereby, respiratory failure which is caused under a spontaneous respiratory movement suppressed by anesthesia is avoided, and thus it is possible to perform prolonged carbon dioxide anesthesia under a water temperature (around 20 C.) at which normal fish and shellfish are treated.

[Problem] Under an underwater environment containing a high concentration of carbon dioxide having an anesthetic effect, prolonged anesthesia is performed on fish and shellfish in a safe and practically simple manner.

[Solution Means] Fine bubbles containing gaseous oxygen are brought into contact with the surface of a gill epithelial cell membrane of fish and shellfish to produce a partial pressure difference between [gaseous oxygen partial pressure][gill capillary dissolved oxygen partial pressure] exceeding a partial pressure difference between [water dissolved oxygen partial pressure][gill capillary dissolved oxygen partial pressure], and thus the amount of oxygen taken by a gill thin plate capillary is remarkably increased. Thereby, respiratory failure which is caused under a spontaneous respiratory movement suppressed by anesthesia is avoided, and thus it is possible to perform prolonged carbon dioxide anesthesia under a water temperature (around 20 C.) at which normal fish and shellfish are treated.

A process includes microbially degrading harvested polyculture plant material to form a concentrated microbial biomass and providing the concentrated microbial biomass to an intermediary animal for consumption. The process may also be directed to producing a product animal which includes providing a growth area having an outlet for waste and providing a harvested plant material collection area having an outlet for degradation products. The process may also include providing a microbial growth system for producing a bacterial biomass and directing at least some waste from the outlet of the product animal growth area to the harvested plant material collection area. The process may also include directing at least some degradation products to the microbial growth system, directing some of the microbial biomass produced in the microbial growth system to an intermediary animal for consumption, and directing the intermediary animal to a product animal growth area.

A farming apparatus for aquatic organisms living in sandy soil, includes: a farming tank; and water feed pipes provided at a constant interval at the bottom of the farming tank; wherein the water feed pipes each have jet openings arranged at a constant pitch on the side faces. The farming apparatus is capable of continuously keeping clean the entire area of the sand layer which provides a living environment for crustaceans and other aquatic organisms living in sandy soil, so that high-quality aquatic organisms living in sandy soil can be produced at a high rate of growth and high density.

An object is to maintain the hydrogen sulfide concentration in rearing water at a constant value without measuring the hydrogen sulfide concentration in the rearing water. The present invention includes: a water tank 10 that stores rearing water W leaving a gas phase at an upper part; a gas sensor 50 to detect hydrogen sulfide gas concentration in the gas phase G; and a hydrogen sulfide supplying means F to supply hydrogen sulfide to the rearing water W based on a detection signal output from the gas sensor 50 so as to maintain a hydrogen sulfide concentration in the rearing water W at a predetermined value.

A system (100) and method for attaching an aquatic basket (102) to a longline in an aquaculture farming environment. The system includes the basket (102), a longline engagement means (104, 105), and a locking bar (106) configured for slidable engagement with one or both of the engagement means and basket (102).

A system (100) and method for attaching an aquatic basket (102) to a longline in an aquaculture farming environment. The system includes the basket (102), a longline engagement means (104, 105), and a locking bar (106) configured for slidable engagement with one or both of the engagement means and basket (102).

A modular aquaculture system, and method of using same, deployable in a body of water having a water column, the system including at least one carrier unit defining at least one chamber in which a plurality of containers can be placed. Each container is capable of holding a plurality of organisms to be cultured, and the chamber has at least one chamber inlet for water intake and at least one chamber outlet. The system further includes support structure having sufficient flotation to suspend the at least one carrier unit in the water column. At least one drive unit actively alters a rate of water flow through the at least one chamber and past the containers.

A modular aquaculture system, and method of using same, deployable in a body of water having a water column, the system including at least one carrier unit defining at least one chamber in which a plurality of containers can be placed. Each container is capable of holding a plurality of organisms to be cultured, and the chamber has at least one chamber inlet for water intake and at least one chamber outlet. The system further includes support structure having sufficient flotation to suspend the at least one carrier unit in the water column. At least one drive unit actively alters a rate of water flow through the at least one chamber and past the containers.