Orca whales (Orcinus orca) are among the most fearsome apex predators in the ocean. When not preying on the largest fish on Earth, they’re...

Scientists filmed orcas using seaweed to groom each other, showing tool use.

Scientists filmed orcas using seaweed to groom each other, showing tool use.

Scientists have spotted a subset of killer whales using seaweed to scratch each other’s backs, marking the first known identification of “tool”...

Scientists have spotted a subset of killer whales using seaweed to scratch each other’s backs, marking the first known identification of “tool”...

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of orcas. ......

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of orcas. ......

In pricey spas, kelp facials and body wraps can set the esthetically inclined human back hundreds of dollars.

In pricey spas, kelp facials and body wraps can set the esthetically inclined human back hundreds of dollars.

In pricey spas, kelp facials and body wraps can set the esthetically inclined human back hundreds of dollars.