Dondra Head pelagic Sperm Whale (Physeter macrocephalus) diving: acoustic clicking and squid foraging?

The deep ocean trench off Dondra Head—where the continental shelf plunges to 1,500 meters within 5 nautical miles of the lighthouse—is one of the world’s premier foraging grounds for Sperm Whales (Physeter macrocephalus). Resident pods of females and juveniles execute 45-minute foraging dives down to 800-1,200 meters to hunt bathypelagic oceanic squid (Histioteuthis). During descents, they emit powerful regular echolocation clicks (up to 230 dB re 1 uPa, the loudest biological sound on Earth) produced via the spermaceti organ. As a whale closes on prey, click rates accelerate into a rapid "buzz" or "creak" right before capture.