Long-Arm Octopus Profile View Showing Eye Detail and Papillae in Bali

A high-magnification macro underwater photograph captures a side-profile view of a long-arm octopus (Abdopus or Macrotritopus species, such as Abdopus aculeatus) resting on a dark volcanic sand seabed in Bali. The small cephalopod features an elongated, tapered mantle covered in fine, raised white and olive-brown dermal papillae. Its large, elevated eye stalk takes center stage, displaying a crisp, horizontal slit pupil surrounded by a gleaming golden-bronze iris. Below the head, several flexible, slender arms coil across the coarse volcanic substrate, showcasing rows of pale, translucent-blue suction cups along their undersides. The dark volcanic sand is composed of fine basalt grains, reddish mineral fragments, and small shell debris. A shallow depth of field pins sharp focus on the octopus’s eye, mantle texture, and nearby suction cups, while the surrounding sediment gently softens into the background. Ideal for cephalopod ocular morphology studies, dermal papillae guides, marine biology textbooks, and professional nature stock media.