Skip to content
All news
  • All news
  • About whales & dolphins
  • Corporates
  • Create healthy seas
  • End captivity
  • Prevent deaths in nets
  • Stop whaling
  • Stranding
  • Whale watching
Amazon River dolphin (Boto)

River dolphins observed playing with anaconda

Researchers in Bolivia recorded an unusual interaction between local rivers dolphins and an anaconda snake...
Common bottlenose dolphin

Dolphin pens identified at Russian naval base

Analysis of satellite imagery suggests that Russia may be using military dolphins at its naval...
Orcas in far east Russia.

New fossil gives insight into feeding habits of ancient orcas

New research by scientists suggests that orcas and false killer whales only evolved to feed...

High mercury levels found in slaughtered Japanese dolphin meat

According to reports from Japan, police there are investigating the sale of whale and dolphin...

Another fossil gives early clue to evolution of baleen whales

Examination of an ancient fossil has given scientists another insight into the evolution of baleen whales such as humpback or blue whales.

The fossil, named Coronodon havensteini, was found near the Wando River in South Carolina and lived around 30 million years ago. One of the great mysteries of whale evolution is how baleen whales evolve from originally having teeth and at what point did these whales lose their teeth? This whale has a wide snout and short jaw bones that are characteristics of a baleen whale. However, what is intriguing is that it had teeth which appear to have been used in a sieve-like way to catch small prey and filter out the water. But, at the same time, the whale would also have been able to take larger prey using the teeth in a more conventional way.

The latest discovery follows that of possibly the oldest relative of baleen whales found in Peru that lived 36 million years ago which also showed characteristics of having teeth but using suction to catch food.

Full report:
The Origin of Filter Feeding in Whales
Jonathan H. Geisler, Robert W. Boessenecker, Mace Brown, Brian L. Beatty
Current Biology