Figure 2
From: Cartilage structure increases swimming efficiency of underwater robots

Skeleton diagram of stingray (drawn with reference to52). Cartilage structure is radially distributed in the body providing anisotropic body stiffness.
From: Cartilage structure increases swimming efficiency of underwater robots

Skeleton diagram of stingray (drawn with reference to52). Cartilage structure is radially distributed in the body providing anisotropic body stiffness.