An aquaculture environment control system comprising a plurality of discharge conduits positioned in a vessel, the discharge conduits including one or more orifices; a fluid source in fluid communication with the plurality of discharge conduits; a gas supply source in fluid communication with at least one of the plurality of discharge conduits; wherein discharging fluid from the plurality of discharge conduits into the vessel creates or maintains a current throughout fluid present within the vessel. A method of controlling an aquaculture environment comprising supplying one or more of a fluid and a gas to a plurality of discharge conduits positioned in a vessel; and discharging the one or more of the fluid and the gas from at least one of the plurality of discharge conduits to the vessel, the discharging creating or maintaining a current within the vessel.

An aquaculture environment control system comprising a plurality of discharge conduits positioned in a vessel, the discharge conduits including one or more orifices; a fluid source in fluid communication with the plurality of discharge conduits; a gas supply source in fluid communication with at least one of the plurality of discharge conduits; wherein discharging fluid from the plurality of discharge conduits into the vessel creates or maintains a current throughout fluid present within the vessel. A method of controlling an aquaculture environment comprising supplying one or more of a fluid and a gas to a plurality of discharge conduits positioned in a vessel; and discharging the one or more of the fluid and the gas from at least one of the plurality of discharge conduits to the vessel, the discharging creating or maintaining a current within the vessel.

An aquaculture system is provided. The aquaculture system includes a cultivation pond, a water circulation unit, a water quality detector, and a water processing module. The cultivation pond for storing the cultivation water has a recirculation inlet and recirculation outlet. The water circulation unit is in fluid communication with the cultivation pond to allow the cultivation water in the cultivation pond to circulate through the water circulation unit. The water quality detector is used to detect the quality of the water to obtain water quality information. The water processing module includes an electrolytic gas generator and a control unit to improve the quality of water. The control unit receives the water quality information and adjusts the applied voltage on the electrolytic gas generator according to the water quality information to control the gas species and a ratio of the gases generated by the electrolytic gas generator.

An aquaculture system is provided. The aquaculture system includes a cultivation pond, a water circulation unit, a water quality detector, and a water processing module. The cultivation pond for storing the cultivation water has a recirculation inlet and recirculation outlet. The water circulation unit is in fluid communication with the cultivation pond to allow the cultivation water in the cultivation pond to circulate through the water circulation unit. The water quality detector is used to detect the quality of the water to obtain water quality information. The water processing module includes an electrolytic gas generator and a control unit to improve the quality of water. The control unit receives the water quality information and adjusts the applied voltage on the electrolytic gas generator according to the water quality information to control the gas species and a ratio of the gases generated by the electrolytic gas generator.

A benthonic animal isolation frame and a method for studying an aquatic ecosystem by using the same is provided. The benthonic animal isolation frame includes side surfaces and a bottom surface of the isolation frame as hollow structures. Joints of the side surfaces and the bottom surface are provided with clamping grooves. The bottom surface is provided with a filter membrane; and the filter membrane is fixed on the bottom surface through the clamping grooves. The benthonic animal isolation frame can be used for easily studying the influence of the benthonic animal and excrement thereof on a water body ecological system.

A benthonic animal isolation frame and a method for studying an aquatic ecosystem by using the same is provided. The benthonic animal isolation frame includes side surfaces and a bottom surface of the isolation frame as hollow structures. Joints of the side surfaces and the bottom surface are provided with clamping grooves. The bottom surface is provided with a filter membrane; and the filter membrane is fixed on the bottom surface through the clamping grooves. The benthonic animal isolation frame can be used for easily studying the influence of the benthonic animal and excrement thereof on a water body ecological system.

A composite thread cable for an aquaculture cage includes multiple multi-filament polyester fiber yarn wires and at least one or more than one copper alloy wire blending and interweaving with the multi-filament polyester fiber yarn wires. Each of the multi-filament polyester fiber yarn wires is made of flexible material. The at least one or more than one copper alloy wire is made of hard material. The at least one or more than one copper alloy wire is intertwined in the multi-filament polyester fiber yarn wires tightly and closely to construct the composite thread cable.

A composite thread cable for an aquaculture cage includes multiple multi-filament polyester fiber yarn wires and at least one or more than one copper alloy wire blending and interweaving with the multi-filament polyester fiber yarn wires. Each of the multi-filament polyester fiber yarn wires is made of flexible material. The at least one or more than one copper alloy wire is made of hard material. The at least one or more than one copper alloy wire is intertwined in the multi-filament polyester fiber yarn wires tightly and closely to construct the composite thread cable.

This invention relates to the use of a tunicate or an extract obtained from a tunicate for the production of one or more biofuel selected from an alcohol and biodiesel. The invention also relates to a method for producing a biofuel from a tunicate wherein the biofuel is selected from an alcohol and biodiesel and wherein said method comprises the steps of: (a)(i) subjecting said tunicate or one or more polysaccharides extracted from said tunicate to enzymatic or acid hydrolysis to form a hydrolysate containing one or more monosaccharides and (ii) fermenting said one or more monosaccharides to form an alcohol; or (b)(i) extracting lipids/fatty acids from said tunicate and (ii) converting said lipids/fatty acids into biodiesel by transesterification or alcoholysis or (iii) subjecting said tunicate to transesterification or alcoholysis thereby converting lipids/fatty acids present in said tunicate into biodiesel.

Large capacity fish and seafood growing aquaculture comprises multiple floating at sea concentric transparent torus tubes with central barge equipped with air compressor, electronic controller and anchored to seabed. Floating level above sea level of aquaculture torus tube is controlled by floating level sensor input triggering compressor to inflatable helical balloon wrapped around aquaculture tube and commanded by electronic controller. Water level in each tube is controlled by air pressure actuated valves. Each tube consists of four torus tube segments which are constructed of strong molded structural helical pipe wrapped into torus shape with molded resilient helical strip wall and with sealed helical inflatable balloon to control tube buoyancy level with connection to four vertical pipes for external rapid insertion and removing fish and food into and from the tubes. Cabled means connected to seabed.