Sonar en Spitssnuitdolfijnen: de laatste stand van zaken

Sinds de jaren ’60, toen sonar zijn intrede deed bij de marine om onderzeeërs op te sporen, zijn er wereldwijd twaalf massastrandingen van spitssnuitdolfijnen bekend bij o.a. grote militaire oefeningen op zee. Sonar maakt gebruik van geluidsimpulsen om onder water te navigeren of om voorwerpen te detecteren. Dolfijnen gebruiken echolocatie, vergelijkbaar met actieve sonar, om … Meer lezen

New species of Pacific beaked whale confirmed

Scientists have confirmed that a mysterious, unnamed species of beaked whale roams the northern Pacific Ocean. Sightings of the creature, which has a bulbous head and a beak like a porpoise, had been reported by Japanese fishermen, who call them karasu or ravens, but it was previously unknown to science. >> Read more …

Killer Whale Predation on Beaked Whales

Observations of killer whales (Orcinus orca) feeding on the remains of beaked whales have been previously documented; however, to date, there has been no published account of killer whales actively preying upon beaked whales. This article describes the first field observations of killer whales interacting with, hunting and preying upon beaked whales (Mesoplodon spp.) on … Meer lezen