An agricultural amphibious bait feeding boat includes a boat body. A bait feeding device is fixed to one end of the boat body, and a propulsion device is fixed to the other end of the boat body. The boat body includes two foam floating bodies, foam fixing carbon rods, a transverse carbon rod, tube ferrule fixing assemblies, and tee joints. The two foam floating bodies include a left foam floating body and a right foam floating body, the foam fixing carbon rods parallel to each other are respectively arranged above the two foam floating bodies, and the foam floating bodies and the foam fixing carbon rods are fixed through the tube ferrule fixing assemblies The transverse carbon rod is connected to the foam fixing carbon rods through the tee joints, and the left foam floating body and the right foam floating body are fixedly connected to each other.

In one aspect, there is provided a method that includes receiving, by a control system having (i) a first camera configured to obtain an image of a scene, (ii) a winch controller, and (iii) a feeding system configured to deliver a feed to aquaculture, instructions to initiate a calibration of the first camera, determining a calibration state of the first camera, determining a sequence of calibration steps based on the calibration state of the first camera, and executing the sequence of calibration steps to calibrate the first camera.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that generate from a first pair and a second pair of images of livestock that are within an enclosure and that are taken at different times using a stereoscopic camera, at least two distance distributions of the aquatic livestock within the enclosure. The distance distributions can be used to determine a measure associated with an optical property of the water within the enclosure. A signal associated with the measure can be provided.

A module for an artificial reef is substantially in the shape of a continuous arch and is formed as a skeletal framework comprising a plurality of spaced apart transverse beams that each define a portion of the arch, and a plurality of longitudinal beams attached to the transverse beams and extending the length of the arch. The longitudinal beams provide a barrier to waves when one or more modules are anchored to the sea floor. The module is additionally usable as an electrified reef to accelerate mineral deposits on the beams that encourages marine life and increases the effectiveness of the wave barrier.

Disclosed is a device for repairing deep-water cage nets. The device includes an open-frame underwater robot and a repairing mechanism of deep-water cage nets, where the repairing mechanism of deep-water cage nets includes a hole penetrating mechanism, a wire feeding mechanism, a rotary knotting mechanism, a steel wire cutting mechanism and steel wire clamping mechanisms. The hole penetrating mechanism comprises mechanical claws and a control box for controlling the mechanical claws. The wire feeding mechanism and the steel wire cutting mechanism are both fixedly arranged in the control box, and the steel wire clamping mechanisms and the rotary knotting mechanism are both arranged between two mechanical claws. The open-frame underwater robot is detachably connected with the repairing mechanism of deep-water cage nets through a connecting shaft.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for a calibration target for ultrasonic removal of ectoparasites from fish. In some implementations, the calibration target includes a fish-shaped structure, sensors positioned at different locations of the fish-shaped structure, a processor that receives sensor values from the sensors, and a transmitter that outputs sensor data from the calibration target based on the sensor values.

A system of fattening for molluscs having supporting frames with first coupling members for the uprights that make up components and, carriers of the breeding compartments, and second coupling members on the flotation tubes of a moveable platform. The members and the uprights have aligned openings and that are actuated by removable coupling devices allowing the uprights to be attached or uncoupled. A crossbar, with an arrangement of connectors, keeps the components and provides an easily handled module that can be separated from the supporting frame along with the breeding compartments.

An object is to provide a feed for aquatic animals that comprises a fish-meal-alternative material. A feed for aquatic animals, comprising (A) an insect material having a calcium content of 800 to 3500 mg/100 g and/or a magnesium content of 230 to 1000 mg/100 g, and (B) fish meal and/or a fish-meal-alternative material.

A multifunctional floating breakwater includes: a plank platform, a first buoy, a second buoy, a first wave baffle, a second wave baffle, a first arc breast wall, a second arc breast wall, upper inclined supports, lower inclined supports and a net cage. The multifunctional floating breakwater integrates a floating breakwater and a wave-energy power generation device, which can not only maintain good stability of the water surface in a harbor, but also generate electric energy, and allow for aquaculture and other activities as well, and has advantages of being movable and not limited by water depth and geology. In addition, the invention has a simple structure, easy production and maintenance, no pollution to the marine environment and therefore wide application prospects.

An automated oyster maturation system including a containment assembly rotatably disposed within a housing. The containment assembly includes a spiral construction that includes compartments that are in communication with one another, walls that define the compartments, and ramps. Openings disposed in the walls and ramps increase in size from the outer diameter to the inner diameter of the spiral construction so that, with every complete rotation of the containment assembly, every oyster will tumble further into the spiral construction and ascend from its original compartment into the adjacent inner compartment where opening size is larger than in the original compartment such that only oysters which have grown sufficiently can remain in the adjacent inner compartment while oysters that have not grown sufficiently yet will fall through the openings of the adjacent inner compartment into the original compartment.