In this display case is the skull of an extinct beaked whale. Beaked whales are the least known of all dolphins and the world champions of deep-sea diving. Yet there are no fewer than 23 different species of beaked whales. Some of them – reaching lengths of up to 12 meters – are the giants among dolphins. The reason we know so little about them is that they spend 90% of their time in deep, remote oceans. There, they break all conceivable diving records: a recent dive was recorded lasting 2 hours and 15 minutes, reaching a depth of 3,000 meters! How they achieve this remains a mystery. Deep in the water, they find their favorite food: squid, which they suck in. They do not bite or chew, and therefore have few or no teeth. This Choneziphius had a toothless snout as far back as eight million years ago and was one of the first beaked whales to explore the ocean depths and hunt squid. So far, about 30 skulls of this beaked whale have been found in the Westerschelde.