An image of a blue sky ocean background

A newly identified species of squid that covers itself in mud for camouflage has underscored the significant lack of understanding regarding the Earth’s deep-ocean ecosystems. The discovery, as reported by the National Oceanography Centre (NOC), involves a small cephalopod observed at depths exceeding 2,500 metres in the Pacific Ocean.

Scientists first captured footage of the creature using remotely operated vehicles (ROVs) during an expedition to the Clarion-Clipperton Zone, an area of the seabed currently under scrutiny due to interest in deep-sea mining. The squid, which has been nicknamed the “muddy squid,” was observed actively pulling sediment from the seafloor to coat its body, a defensive behaviour previously unknown in this type of marine life.

The lead researcher on the project stated that the find serves as a “stark reminder of how little we know about the deep ocean,” particularly in regions that are now being considered for industrial development. Experts suggest that such camouflage techniques may be a vital survival mechanism in the “midnight zone,” where light is non-existent and predators rely on bioluminescence or touch.

This discovery adds to a growing list of new species identified in the region. According to the Natural History Museum, more than 5,000 species new to science have been found in the Clarion-Clipperton Zone in recent years, with the vast majority still requiring formal description. The frequency of these discoveries has led to increased calls from the scientific community for greater caution regarding seabed disturbances.

The discovery emphasises the critical role of advanced technology in marine exploration. By using high-definition cameras and robotic arms, researchers are now able to witness behaviours that were impossible to see using traditional net-trawling methods, which often damage delicate specimens.

The NOC stated that continuing to map and study these “knowledge gaps” is essential for informed decision-making regarding the management of the global ocean and the protection of its biodiversity for future generations.