A submersible vehicle (210) includes a plurality of outlet nozzles (301, 302, 303) arranged to receive pressurised fluid from a remote supply and expel the pressurised fluid to create propulsion to manoeuvre the vehicle (210); and a plurality of valves (401) in fluid communication with the outlet nozzles (301, 302, 303) and operable to provide variable pressure and/or flow to each outlet nozzle (301, 302, 303). The outlet nozzles (301, 302, 303) are arranged about the vehicle to provide six-degrees of freedom movement and control of the submersible vehicle (210).

A submersible tag device configured to operate within a liquid medium, including a liquid-tight housing defining a chamber that remains isolated from the liquid medium when the housing is immersed in the liquid medium, and an attachment mechanism configured to attach to a target selected by a user. A communication module is disposed in the chamber, the module including a receiver, a controller configured to receive input from the receiver, a power source operatively connected to at least the controller, and data storage. When the tag device is immersed in the liquid medium, the receiver is configured to receive a command signal through the liquid medium.

A system and method for remote monitoring and command and control of one or many offshore aquafarms is provided. Operators are able to securely access web applications and services hosted in the cloud through which husbandry functions such as feeding fish, cleaning the cage and removing mortalities can be automatically scheduled and executed. Offshore aquafarms relay information, such as environmental sensor data and video feeds back to the cloud to be viewed by the operators.

A system and method for remote monitoring and command and control of one or many offshore aquafarms is provided. Operators are able to securely access web applications and services hosted in the cloud through which husbandry functions such as feeding fish, cleaning the cage and removing mortalities can be automatically scheduled and executed. Offshore aquafarms relay information, such as environmental sensor data and video feeds back to the cloud to be viewed by the operators.

A system and method for automatically harvesting fish from an aquaculture cage is provided. Underwater robotic rovers draw out a large net from a protective enclosure. The net is manipulated to corral or concentrate the fish into a smaller volume. Transponders installed at strategic locations throughout the cage facilitate navigation of the rovers.

A system and method for automatically harvesting fish from an aquaculture cage is provided. Underwater robotic rovers draw out a large net from a protective enclosure. The net is manipulated to corral or concentrate the fish into a smaller volume. Transponders installed at strategic locations throughout the cage facilitate navigation of the rovers.

Apparatuses, methods, and systems are provided for making the harvesting of sea life efficient. For example, real-time or periodic information about the status of the many traps a fisherman may have set is communicated to the fisherman while the traps are still in the water. A fisherman can use this information to determine the best time and path for trap retrieval and reset operations to reduce fuel use and improve the catch efficiency per unit effort.

Apparatuses, methods, and systems are provided for making the harvesting of sea life efficient. For example, real-time or periodic information about the status of the many traps a fisherman may have set is communicated to the fisherman while the traps are still in the water. A fisherman can use this information to determine the best time and path for trap retrieval and reset operations to reduce fuel use and improve the catch efficiency per unit effort.

A bait cake for a crustacean trap, the bait cake comprising a mixture of animal collagen, water, gelatin, gelling agents, fish meal, and fish oil, molded and cured into a cylindrical cake; a method of preparation of a bait cake which preserves the attractiveness of the bait cake to crustaceans, and a method of attracting crustaceans to a trap using the bait cake of the invention.

A bait cake for a crustacean trap, the bait cake comprising a mixture of animal collagen, water, gelatin, gelling agents, fish meal, and fish oil, molded and cured into a cylindrical cake; a method of preparation of a bait cake which preserves the attractiveness of the bait cake to crustaceans, and a method of attracting crustaceans to a trap using the bait cake of the invention.