A method and apparatus incorporating erosion preventing mats or blankets having oyster spat are placed to prevent or reduce erosion. The method and apparatus incorporates seeding with oyster spat and/or oyster larvae onto a blanket having rough surfaces and comprising calcium. After seeding and setting natural growth of the oyster larvae can create a barrier that helps prevent erosion by breaking the kinetic energy of waves.

A breakwater comprising a base member having an outer surface, and a plurality of elongate members is disclosed. An end region of each of the plurality of elongate members is coupled to the outer surface of the base member. The base member and/or at least one of the elongate members has a textured surface for the attachment of marine life. The breakwater may be located on a seabed, a riverbed, an ocean floor or a floor of a waterway, to protect a coast or riverbank from coastal erosion.

Fish attractor and escape habitat systems are disclosed. The fish attractor and escape habitat systems include a pyramid-shaped base structure having a plurality of side walls forming an interior space and having an open bottom and an open top, where the side walls include elongated slots for fish to swim into and out of the interior space and brace slots for receiving braces that provide shade for the fish. Spawning devices and conservation systems for fish forage growth are also disclosed.

Fish attractor and escape habitat systems are disclosed. The fish attractor and escape habitat systems include a pyramid-shaped base structure having a plurality of side walls forming an interior space and having an open bottom and an open top, where the side walls include elongated slots for fish to swim into and out of the interior space and brace slots for receiving braces that provide shade for the fish. Spawning devices and conservation systems for fish forage growth are also disclosed.

A curtain enclosure formed from a flexible, non-permeable membrane is positioned adjacent to a section of riprap or similarly configured structure that has been installed along a shoreline. The curtain is stretched around rigid elongate posts and extends outward into the water from the edge of the riprap to create an enclosed containment area formed between the interior of the curtain and the edge of the riprap. The bottom of the curtain is weighted to sit along the bed of the water body and resist movement in that position. Once the curtain enclosure has been formed, larval bivalve organisms, such as oyster larvae, are poured into the curtain enclosure, and thereafter the curtain enclosure is maintained in that position for a period sufficient to promote attachment and growth of the larvae on the riprap.

Proposed is a wave-dissipating block including: a body placed on a seabed perpendicularly thereto and having a shape of a polygonal column, a cylinder, an oval column, or a cross-shaped column; male coupling protrusions formed on a first surface of the body in a height direction thereof and on a surface opposite to the first surface, respectively; female coupling grooves formed in a second surface of the body in the height direction thereof and in a surface opposite to the second surface, respectively; a habitat part configured as a space defined at a center portion of the body or a portion of the body; a dividing plate provided as a plate dividing the habitat part into habitat parts; a through hole formed in the dividing plate; and a space part having a space defined between multiple bodies of wave-dissipating blocks connected adjacently to each other.

A coral ring mount device and method for the propagative culture of sessile benthic marine organisms (for example, stony corals) employing either a ring, washer or threaded nut or similar as a propagule mount upon which the coral is set in order to attach, grow and overgrow within a coral nursery system. In the preferred embodiment of the invention, once the coral is grown onto the ring mount and to its requisite size and condition, the ring mount becomes the washer through which passes a screw to secure the ring and coral to the seafloor.

Proposed is a wave-dissipating block including: a body placed on a seabed perpendicularly thereto and having a shape of a polygonal column, a cylinder, an oval column, or a cross-shaped column; male coupling protrusions formed on a first surface of the body in a height direction thereof and on a surface opposite to the first surface, respectively; female coupling grooves formed in a second surface of the body in the height direction thereof and in a surface opposite to the second surface, respectively; a habitat part configured as a space defined at a center portion of the body or a portion of the body; a dividing plate provided as a plate dividing the habitat part into habitat parts; a through hole formed in the dividing plate; and a space part having a space defined between multiple bodies of wave-dissipating blocks connected adjacently to each other.

An improved artificial mangrove assembly designed to duplicate a natural mangrove that provides protection and promotes an underwater ecosystem, which can help reverse the decline in the fish population, aviary habitats, erosion, and the like and help to promote land and marine colonization.

An improved artificial mangrove assembly designed to duplicate a natural mangrove that provides protection and promotes an underwater ecosystem, which can help reverse the decline in the fish population, aviary habitats, erosion, and the like and help to promote land and marine colonization.