Containment pens for finfish aquaculture

1. A containment pen for finfish aquaculture, comprising

a supporting structure,

a net attached to the supporting structure and defining a containment volume for containing finfish,

wherein the supporting structure and net are configured to form an enclosure of sufficient size to serve as a containment pen for swimming finfish,

wherein the net comprises a multiplicity of removable net panels,

wherein each of the removable net panels comprises a discrete piece of flexible netting attached along its perimeter to one or more substantially rigid beams,

wherein the removable net panels are configured to be removable from the containment pen with the piece of flexible netting remaining attached to the one or more substantially rigid beams,

wherein the multiplicity of net panels provide the supporting structure for a majority of the containment pen,

wherein adjoining net panels are attached by attaching together adjoining beams,

wherein the panels are shaped so that a beam of one panel extends generally parallel to and adjacent a beam of an adjoining panels, and

wherein the net panels are in the shape of a polygon.

2. The containment pen of claim 1 wherein the pen is substantially spherical.

3. The containment pen of claim 2 wherein the pen is a geodesic structure.

4. The containment pen of claim 3 wherein the panels comprise one or more triangular panels making up the geodesic structure.

5. The containment pen of claim 1 wherein the discrete pieces of flexible netting are tensioned generally in a plane defined by the one or more substantially rigid members.

6. The containment pen of claim 1 wherein the net panels are configured so that one or more net panels can be removed, leaving an opening in the containment pen, wherein the perimeter of the opening is defined by the beams of net panels that adjoined the one or more net panels that have been removed.

7. A containment pen for finfish aquaculture, comprising

a supporting structure,

a net attached to the supporting structure and defining a containment volume for containing finfish,

wherein the supporting structure and net are configured to form an enclosure of sufficient size to serve as a containment pen for swimming finfish,

wherein the net comprises a multiplicity of removable net panels,

wherein each of the removable net panels comprises a discrete piece of flexible netting attached along its perimeter to one or more substantially rigid beams,

wherein the removable net panels are configured to be removable from the containment pen with the piece of flexible netting remaining attached to the one or more substantially rigid beams,

wherein the multiplicity of net panels provide the supporting structure for a majority of the containment pen,

wherein adjoining net panels are attached by attaching together adjoining beams,

wherein the panels are shaped so that a beam of one panel extends generally parallel to and adjacent a beam of an adjoining panels, and

wherein the adjoining net panels are attached together by fasteners extending between the adjoining beams, and wherein the fasteners are removable to permit a panel to be removed from the pen.

8. A containment pen for finfish aquaculture, comprising

a supporting structure,

a net attached to the supporting structure and defining a containment volume for containing finfish,

wherein the supporting structure and net are configured to form an enclosure of sufficient size to serve as a containment pen for swimming finfish,

wherein the net comprises a multiplicity of removable net panels,

wherein each of the removable net panels comprises a discrete piece of flexible netting attached along its perimeter to one or more substantially rigid beams,

wherein the removable net panels are configured to be removable from the containment pen with the piece of flexible netting remaining attached to the one or more substantially rigid beams,

wherein the multiplicity of net panels provide the supporting structure for a majority of the containment pen,

wherein adjoining net panels are attached by attaching together adjoining beams,

wherein the panels are shaped so that a beam of one panel extends generally parallel to and adjacent a beam of an adjoining panels, and

wherein the discrete pieces of flexible netting are tensioned generally in a plane defined by the one or more substantially rigid members.

9. A containment pen for finfish aquaculture, comprising

a supporting structure,

a net attached to the supporting structure and defining a containment volume for containing finfish,

wherein the supporting structure and net are configured to form an enclosure of sufficient size to serve as a containment pen for swimming finfish,

wherein the net comprises a multiplicity of removable net panels,

wherein each of the removable net panels comprises a discrete piece of flexible netting attached along its perimeter to one or more substantially rigid beams,

wherein the removable net panels are configured to be removable from the containment pen with the piece of flexible netting remaining attached to the one or more substantially rigid beams,

wherein the multiplicity of net panels provide the supporting structure for a majority of the containment pen,

wherein adjoining net panels are attached by attaching together adjoining beams, and

wherein the panels are shaped so that a beam of one panel extends generally parallel to and adjacent a beam of an adjoining panels, and

wherein the containment pen further comprises flotation members that comprise fixed flotation members sized to provide substantially neutral buoyancy to the containment pen.