Cartilage Cartilage is a flexible but strong supportive connective tissue. Unlike bone and all other connective tissue types, cartilage is avascular, lacking blood vessels. For this reason alone, cartilage does not possess the regenerative capacity of bone or the other connective tissue types. Remember, nutrient delivery is essential for tissue repair.
The flounder is a species of flatfish that is found in the coastal waters of the northern Atlantic and Pacific Oceans. Flounder are found hiding on the ocean floor at depths from shallow coral reefs to the deepest trench on Earth.
Sea urchins can be found all over the world in all oceans, warm or cold water. They live in a variety of environments in many different parts of the world. Some common places they live are in rock pools and mud, on wave-exposed rocks, on coral reefs in kelp forests and in sea grass beds.