Attend this Adopt-A-Stream show and you will learn lots about the San Juan killer whale population.

For instance, you will be able to tell whether an orca is sleeping or not because the brain of a killer whale is so big, they have to turn off half to go into slumber mode.

You will also be able to recognize if a whale is swimming to get to another location, or hunting for salmon or simply playing.

Also, thanks to a research webcam that was once attached to a killer whale’s dorsal fin — the big one that sticks out of the water — you will also get an orca’s view of what it’s like to swim with the San Juan pod.

“Killer Whale Tales” will be presented at the Adopt-A-Stream Foundation’s Northwest Stream Center Saturday.

Jeff Hogan, a biologist, photographer and trained actor, puts on a show enjoyed by first-graders on up while presenting lots of facts, along with amazing underwater video, said Tom Murdoch, Adopt-A-Steam executive director.

“Jeff spends much of his time with the killer whales in waters around the San Juan Islands and has many great whale stories to tell,” Murdoch said.

Also if you visit the show, you will receive a workbook to help you identify each whale by looking at its dorsal fin.

“Killer Whale Tales” is scheduled for 11 a.m. Saturday at the NW Stream Center in Snohomish County’s McCollum Park, 600 128th St. SE, Everett. Cost is $5 for Adopt-A-Stream Foundation members and $7 for nonmembers.

This is a popular show for the whole family, so you are encouraged to sign up ahead of time as space is limited. Call 425-316-8592.

For more details about “Killer Whale Tales” or other upcoming Streamkeeper Academy events, go to www.streamkeeper.org.

Herald staff