To start a kelp-based grooming session, an orca places the bull kelp stipe on its face and nuzzles against another killer ...

Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...

Orcas have been spotted giving each other rubdowns with kelp tools, rubbing pieces of the seaweed between their bodies.

In the cool, clear waters of the North Pacific, killer whales engage in unusual behavior. They glide beneath the surface with ...

We were amazed when we first noticed this behavior,” said Michael Weiss, research director at the Center for Whale Research in the U.S. state of Washington. What started as a puzzling observation in ...

Through footage from a drone more than 100 feet in the sky, the researchers watched orcas yank out sections of the stem of bull kelp, ...

Other animals including some early humans, non-human primates, sea otters, elephants, and bird species are known to use ...

A new study reveals killer whales fashion kelp into tools and use them to groom each other, a possible first for marine ...

Killer whales have been seen detaching lengths of seaweed and using them to massage each other—the first evidence of ...

Their stem (or stipe) ... Bull kelp (Nereocystis luetkeana) can grow as much as a foot a day. It uses air-filled bulbs to float in the water column, often forming large canopies.

Bull kelp is an annual seaweed, growing from a spore to maturity in a single year. It can reach up to 100 feet tall at a rate of 10 inches per day. Of the 17 species of kelp in the Salish Sea ...

Bull kelp has been harvested on king island since the 1970's. ( triple j hack: April McLennan ) Similar to Debbi, Professor Wright also has a lot of questions that he's hoping their research can ...