New Insights into Nautilus and Allonautilus: Deep Dwellers and Scavengers

For four decades, researchers have been dedicated to understanding how Nautilus and Allonautilus cephalopods, often called "living fossils," successfully thrive in nutrient-limited ocean zones. A recent paper published in Scientific Reports has now documented significant new habits and habitats for these enigmatic species.

These cephalopods appear to live in deeper water than their extinct relatives, with younger individuals residing twice as deep as mature adults.

Daily Life and Movement Patterns

Nautilus and Allonautilus species are observed to scavenge for food and remain in constant motion. This continuous activity helps them thrive in their challenging environment. While some species are known for undertaking daily migrations, descending hundreds of meters at dawn and returning to shallower waters at dusk, the research team found that most species do not exhibit such extensive movements.

New Populations and Conservation Success

The study yielded another significant discovery: a new population of Allonautilus was identified off the island of New Britain. This finding highlights the ongoing potential for uncovering more about these ancient creatures.

Importantly, this newly discovered population, alongside several others, is thriving due in part to hunting restrictions that were directly influenced by the research team's work.