日本リーフ List of Products and Services

Our company utilizes non-standard smoked tiles (unglazed tiles) crushed into gravel for use as aggregate, aiming to promote the attachment and growth of zoospores (seeds) released from seaweeds. We handle a porous seaweed attachment substrate (Cerapora) made by mixing natural fibers and iron powder, solidified with cement paste. The substrate has a surface with suitable uneven shapes for seaweed attachment, making it easy for seaweed spores (seeds) to adhere, and also facilitating the establishment of holdfasts and attachment organs. This design makes it difficult for seaweed to detach even in strong wave conditions, and the shape can be molded relatively freely. 【Features】 - The protruding uneven surface promotes the attachment of zoospores (seeds) released from seaweeds. - The porous interior of the substrate allows seaweed attachment organs to firmly take root, reducing detachment due to waves and other factors. - Uses harmless materials that consider aquatic organisms and the environment. - Can be attached to other structures (covering and wave-dissipating blocks, etc.) besides our products. *For more details, please download the PDF or feel free to contact us.

• Port supplies
• Fishing reef

The "Net Blue Leaf" is a fish reef and breeding reef designed with consideration for operations such as gillnetting and small bottom trawling, featuring a hexagonal prism shape that is difficult for nets to catch. The wide concrete surface generates fish feed through the attachment of many sessile organisms, and when combined with the spacious internal area that has a large shadow surface, it exhibits excellent aggregation and breeding effects. Additionally, due to its monolithic concrete construction, it has high durability, allowing for a semi-permanent fish reef effect. 【Features】 ■ We offer models equipped with spikes that enhance stability and various weights, allowing us to propose and provide suitable products according to the characteristics of the marine area. ■ The internal space surrounded by pillars of varying widths serves as a hiding place and habitat for fish. ■ Upon request, it is possible to enhance functionality by installing optional shelter units inside the reef that increase aggregation for squid spawning substrates, lobsters, and groupers. ■ The addition of the seaweed attachment substrate "Cerapora" allows it to be utilized as a "macroalgal reef." *For more details, please download the PDF or feel free to contact us.

• Fishing reef

The "Karsea Reef" is an artificial reef and breeding reef that incorporates a feeding culture substrate called "tile unit" into a complex structure of steel fish reefs, creating a suitable habitat for aquatic organisms that cannot be produced in natural reefs. It not only demonstrates high effectiveness in attracting various fish species but also serves as a spawning ground and nursery for juvenile fish, contributing to the protection and cultivation of aquatic resources. Additionally, there are various types available to suit different applications, allowing for the selection of the appropriate type based on specific conditions. 【Features】 ■ Reef height from 1 to 20 meters ■ We examine the effects on target fish species from a lineup with different specifications, such as space, and propose and provide suitable products ■ Upon request, it is possible to enhance functionality by combining with other breeding substrates (such as stone, shell, wood, etc.) and implementing measures against net entanglement ■ The addition of the seaweed attachment substrate "Serapola" allows for practical use as a "macroalgal reef" *For more details, please download the PDF or feel free to contact us.

• Fishing reef