A kit for repair of cartilage comprising • at least one first biocompatible polymer which is an elastic material which is less rigid in structure than that of a first and a second phase, and • a solid substrate which substrate comprises the first phase comprising a marine organism skeletal derivative-based solid substrate comprising a series of hollows along a longitudinal axis in said first phase, and a second biocompatible polymer located within the series of hollows along a longitudinal axis; and the second phase comprising a marine organism skeletal derivative-based solid substrate, wherein said marine organism skeletal derivative-based solid substrate is a coral or coral derivative, wherein said coral or coral derivative is aragonite, calcite, hydroxyapatite, mixtures thereof, or other polymorphs of the same; and wherein the kit is provided with instructions and appropriate tools for applying the second biocompatible polymer to the solid substrate such that some of the second biocompatible polymer is substantially located within the series of hollows in the substrate and such that some of the first biocompatible polymer creates a separate phase at a terminus of the solid substrate and the first biocompatible polymer is added to said solid substrate in situ, and wherein said marine organism skeletal derivative is characterized by a specific fluid uptake capacity value of at least 75%, which specific fluid uptake capacity value is determined by establishing a spontaneous fluid uptake value divided by a total fluid uptake value, wherein said fluid is a protein-containing, salt-containing or carbohydrate containing solution, or wherein said fluid is a hydrophilic biologic fluid, wherein said biologic fluid is autologous with respect to a cell or tissue of a subject when said solid substrate is contacted with a cell or tissue of said subject or wherein said fluid is water, or wherein said marine organism skeletal derivative is characterized by having a contact angle value of less than 60 degrees, when in contact with a fluid, wherein said fluid is a protein-containing, salt-containing or carbohydrate containing solution, or wherein said fluid is a hydrophilic biologic fluid, wherein said biologic fluid comprises cells or tissue, or wherein said fluid is water. • at least one first biocompatible polymer which is an elastic material which is less rigid in structure than that of a first and a second phase, and • a solid substrate which substrate comprises the first phase comprising a marine organism skeletal derivative-based solid substrate comprising a series of hollows along a longitudinal axis in said first phase, and a second biocompatible polymer located within the series of hollows along a longitudinal axis; and the second phase comprising a marine organism skeletal derivative-based solid substrate, wherein said marine organism skeletal derivative-based solid substrate is a coral or coral derivative, wherein said coral or coral derivative is aragonite, calcite, hydroxyapatite, mixtures thereof, or other polymorphs of the same; and wherein the kit is provided with instructions and appropriate tools for applying the second biocompatible polymer to the solid substrate such that some of the second biocompatible polymer is substantially located within the series of hollows in the substrate and such that some of the first biocompatible polymer creates a separate phase at a terminus of the solid substrate and the first biocompatible polymer is added to said solid substrate in situ, and wherein said marine organism skeletal derivative is characterized by a specific fluid uptake capacity value of at least 75%, which specific fluid uptake capacity value is determined by establishing a spontaneous fluid uptake value divided by a total fluid uptake value, wherein said fluid is a protein-containing, salt-containing or carbohydrate containing solution, or wherein said fluid is a hydrophilic biologic fluid, wherein said biologic fluid is autologous with respect to a cell or tissue of a subject when said solid substrate is contacted with a cell or tissue of said subject or wherein said fluid is water, or wherein said marine organism skeletal derivative is characterized by having a contact angle value of less than 60 degrees, when in contact with a fluid, wherein said fluid is a protein-containing, salt-containing or carbohydrate containing solution, or wherein said fluid is a hydrophilic biologic fluid, wherein said biologic fluid comprises cells or tissue, or wherein said fluid is water.