Sperm whales use bubble streams to enable vertical, restful sleep

A study from the University of St Andrews reveals new whale behavior. Researchers observed sperm whales emitting continuous bubbles. The bubble streams appear to form a protective barrier around the animal. This barrier allows the whales to rest while remaining vertical. Vertical sleeping helps whales maintain buoyancy and avoid predators. The behavior suggests a sophisticated self‑regulation mechanism. Findings expand understanding of marine mammal sleep patterns. Future research will investigate the physiological benefits of bubble‑aided sleep.