海洋建設 List of Products and Services

The small block "Shellfish-kun Local Filling Type" can utilize local shells. The case filled with shells is removable, making it easy to conduct monitoring and other activities.

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This is a type of small block "Shellfish-kun" with an attached octopus den. ■ The octopus den serves as a spawning ground for common octopuses. ■ The central shell substrate becomes a feeding and hiding place for juvenile octopuses.

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This is a type of small block "Kaiso-kun" equipped with a protective net. ■ Serves as a substrate for seaweed attachment ■ Capable of attaching parent plants and seed threads ■ Structure that is less susceptible to damage from herbivorous organisms due to the protective net

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The shell nurse lobster type has a structure suitable for the habitat of lobsters, and it has been proven to have excellent protective and breeding effects throughout all growth stages from juvenile lobsters to adults, excluding the floating period. 【Features】 ■ By densely arranging shell substrates on the upper surface, it enhances the attachment of seaweed and the shading effect of the internal space. ■ The interior has a shelf structure made of shell substrates in panel form, and by tilting each panel, it provides a habitat space tailored to the size of the lobsters. ■ It includes pathways that allow lobsters to move freely within the reef.

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The Shell Nurse squid spawning reef serves as a spawning ground for species such as spear squid, bigfin reef squid, and cuttlefish. 【Features】 - The underside of the shell substrate serves as a spawning substrate for spear squid. - The upper side of the shell substrate is colonized by kelp and other seaweeds, becoming a spawning ground for bigfin reef squid and cuttlefish. *For more details, please refer to the PDF document or feel free to contact us.

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The Shell Nurse Plus 1.0 type is a product developed primarily for shallow coastal areas with seagrass beds. 【Features】 ■ A structure with high stability against fluid dynamics due to a lower reef height ■ Surface shape with minimal accumulation of floating mud ■ Complex eddies generated around the shell substrate promote the settlement of seaweeds ■ Seaweeds such as kelp firmly anchor themselves by entangling their temporary roots with the shell substrate ■ It is possible to install protective nets in areas with a high number of herbivorous organisms *For more details, please refer to the PDF document or feel free to contact us.

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The Shell Nurse Octopus Habitat is a product developed to create a protective breeding and spawning ground for common octopus, aimed at increasing octopus resources. 【Features】 - Equipped with octopus pots for spawning and hatching protection functions. - The gaps in the shells allow juvenile octopuses to enter, serving as an optimal hiding place. - The habitat promotes the growth of prey organisms such as shrimp and crabs, which are food for octopuses. - Spawning and habitation have been observed even in octopus pots that have been in place for over 20 years, demonstrating long-term effectiveness. *For more details, please refer to the PDF materials or feel free to contact us.*

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The sea cucumber cradle was developed through joint research between the Cold Region Civil Engineering Research Institute of the National Research Institute for Earth Science and Disaster Resilience and Ocean Construction Co., Ltd. It is a breeding reef that can protect the small seedlings of the sea cucumber (approximately 1 cm in body length), which are desired from a production cost perspective, and ensure their growth. 【Features】 ■ Provides an optimal space as a habitat ■ Excellent feed effect ■ Protection from predators ■ Convenient size for handling *For more details, please refer to the PDF document or feel free to contact us.

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The Shell Nurse Dice type is a product that miniaturizes the fish reef JF Shell Nurse, making it easier to handle. It has been adopted in Mexico internationally. It is a small artificial reef made by packing shells into a mesh case, integrated with a steel frame. It can be installed in a stacked manner, creating a complex environment suitable for marine life. 【Features】 ■ Easy to handle size and weight ■ Excellent as a feeding and hiding place for small fish, also effective as a receptacle for seedling release ■ Creates a habitat for fish after the juvenile stage ■ Can be installed in a stacked manner to create diverse habitats for aquatic organisms ■ Algae easily attach to it *For more details, please refer to the PDF materials or feel free to contact us.

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JF Shell Nurse is an artificial reef with a high proliferation effect that effectively utilizes shellfish shells, a byproduct of the fisheries industry. It allows for flexible design and manufacturing tailored to various purposes such as fishing ground creation, seaweed bed creation, and biocompatible coastal protection, as well as to the installation location (inner bays, open seas, soft mud, ports, etc.). It proposes scales and shapes that match water depth, fishing methods, and target fish species.

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