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Our climate report highlights dramatic impacts on whales and dolphins

A new WDC report highlights the dramatic effect on whales and dolphins from climate change,...
© New England Aquarium and Canadian Whale Institute under DFO Canada SARA permit

Scientists unveil new names for 19 North Atlantic right whales

December 6, 2023 - Contact: Regina Asmutis-Silvia, Whale and Dolphin Conservation, (508) 451-3853, [email protected] Pam...
© Clearwater Marine Aquarium Research Institute, taken under NOAA permit #26919. Funded by United States Army Corps of Engineers

Birth announcement! First right whale calf of the 2024 calving season spotted

November 29, 2023 - On November 28th, researchers from the Clearwater Marine Aquarium Research Institute...
© Peter Flood

Two New England-based nonprofits awarded nearly $400k federal grant

© Peter Flood November 20, 2023 - Contact: Jake O'Neill, Conservation Law Foundation, (617) 850-1709,...

Fossil discovery suggests ancient whale hunted other whales

New findings published this week suggest an ancient whale that lived millions of years ago may have included the young of another whale species as prey.

Discovered in 2010 the whale, known as Basilosaurus isis, lived during the late Euocene period around 35 million years ago. Up to 18 metres in length, it had a long snout and sharp teeth and was the largest whale in existence at the time. Fossil remains of the whale were discovered in Egypt’s Wadi Al-Hitan, which translates from Arabic as Whale Valley. The area is famous for the wide array of whale fossils found there. During the Euocene period the now dry valley was part of a shallow sea inhabited by a rich variety of marine life.

Along with the remains of various sharks and fish found near the fossils were the bones of a smaller species of ancient whale called Dorudon atrox. As well as some adults, many of the Dorudon fossils were from younger whales suggesting the area may have been used as a calving area. Skulls of some of these whales showed signs of bite marks indicating the younger ones were a likely prey for Basilosaurus isis

In modern whales, some types of orcas and false killer whales are known to prey on other whale and dolphin species.

For the full report:
Voss M, Antar MSM, Zalmout IS, Gingerich PD (2019)
Stomach contents of the archaeocete Basilosaurus isis: Apex predator in oceans of the late Eocene.
PLoS ONE 14(1): e0209021. https://doi.org/10.1371/journal.pone.0209021