Ambulocetus

Ambulocetus was not as agile in the water as an otter and seems to be adapted for ambushing large prey which it then drowned 1993
 * Ambulocetus**
 * General Information:**
 * Year reported:**


 * Country where found:** Pakistan

48-50 million years ago
 * Geological age (mya):**

Swam in fresh and salt water, but also spent time on land.
 * Habitat (land, fresh water, shallow sea, open ocean):**

Its skull shows adaptations for holding large, struggling prey underwater. Its ear bones also show that it did not have external ears but instead used the same method of hearing as modern whales - picking up vibrations through the jawbone. To detect prey on land, they may have lowered their heads to the ground and felt for vibrations.
 * Skull, teeth, ear structure most like (whales or land animal):**

It had squat legs that splayed from its body, flipper like hind feet, and it weighed about 180kg. On land it probably waddled and pulled its body with its forelimbs, a bit like sea lions do. In the water, //it//swam like a sea otter using its gigantic, probably webbed, hind feet.
 * Limbs and tail (Description. Did it swim? If so, how):**

