A method for polycultivating clams with oysters in subtidal zones in an oyster growing-out bag at a low density, then placing the bags in the upper layer of the water by floating system including floating cage or floats. The clam could be Mya arenaria, and all other economic bivalve species that require burrowing in sand to ensure their growth.

A method for polycultivating clams with oysters in subtidal zones in an oyster growing-out bag at a low density, then placing the bags in the upper layer of the water by floating system including floating cage or floats. The clam could be Mya arenaria, and all other economic bivalve species that require burrowing in sand to ensure their growth.

The present invention provides aquaculture assemblies for culturing oysters in deep waters and includes at least one structure adapted for culturing an aquacultural species; at least one floatation means; and at least one anchoring means connecting said floatation means to the sea bed; wherein said structure is connected to or comprises said floatation means or said floatation means comprises said structure; and wherein said assembly is adapted for supporting said at least one structure either: a) substantially above the water surface at low-tide, and at least substantially below the water surface at high-tide, or b) substantially just below the water surface at low-tide, and fully below the water surface at high-tide. Methods for culturing aquacultural species using assemblies according to the invention are also provided.

The present invention provides aquaculture assemblies for culturing oysters in deep waters and includes at least one structure adapted for culturing an aquacultural species; at least one floatation means; and at least one anchoring means connecting said floatation means to the sea bed; wherein said structure is connected to or comprises said floatation means or said floatation means comprises said structure; and wherein said assembly is adapted for supporting said at least one structure either: a) substantially above the water surface at low-tide, and at least substantially below the water surface at high-tide, or b) substantially just below the water surface at low-tide, and fully below the water surface at high-tide. Methods for culturing aquacultural species using assemblies according to the invention are also provided.

The present invention pertains to a method for automatic sea lice monitoring in fish aquaculture, the method comprising submerging a camera (4) in a sea pen (300) comprising fish, using the camera to make an image of at least one of said fish, analysing the image to differentiate between individual sea lice present on the fish and the fish itself and assessing the number of sea lice present on the fish, wherein the camera is attached to a device (1, 10, 100) for guiding the salmon along an imaging track (5), the camera being directed to the track.

The present invention pertains to a method for automatic sea lice monitoring in fish aquaculture, the method comprising submerging a camera (4) in a sea pen (300) comprising fish, using the camera to make an image of at least one of said fish, analysing the image to differentiate between individual sea lice present on the fish and the fish itself and assessing the number of sea lice present on the fish, wherein the camera is attached to a device (1, 10, 100) for guiding the salmon along an imaging track (5), the camera being directed to the track.

A semi-submersible spar-type offshore fish farm (1) for cultivating fish at open sea, including an elongated center column (2) that includes a first end part (3), and a ballast system (4) that is arranged at the first end part and that includes at least one buoyancy tank (5) and at least one clump weight (6) that are movably interconnected, wherein in use of the fish farm the at least one buoyancy tank and the at least one clump weight are arranged at a distance, D, with respect to each other.

A semi-submersible spar-type offshore fish farm (1) for cultivating fish at open sea, including an elongated center column (2) that includes a first end part (3), and a ballast system (4) that is arranged at the first end part and that includes at least one buoyancy tank (5) and at least one clump weight (6) that are movably interconnected, wherein in use of the fish farm the at least one buoyancy tank and the at least one clump weight are arranged at a distance, D, with respect to each other.

An apparatus for cleaning nets underwater comprising a cleaning head formed from at least one propeller having a perimeter rim available for receipt of knuckles. The cleaning head is positioned against the surface of an underwater net wherein the cleaning features are constructed and arranged to remove growth from the nets.

An apparatus for cleaning nets underwater comprising a cleaning head formed from at least one propeller having a perimeter rim available for receipt of knuckles. The cleaning head is positioned against the surface of an underwater net wherein the cleaning features are constructed and arranged to remove growth from the nets.