The Littoral Zone

29 Episodes
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By: Mari Ana Trench

Come join Mari Ana Trench as we dip our toes into the diverse natural life on the Pacific Northwest Coast. Fun, informative, and 5 minutes! Now on KMUN Astoria, Oregon.

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Orcas A.K.A. Killer Whales
Orcas A.K.A. Killer Whales episode artwork
#28
Last Saturday at 12:00 AM

Why would an apex predator create a fashion trend? Tune in to KMUN 91.9 FM in Astoria, Oregon for your 5 minute dose of coastal ecology!


Sea Otter 841
Sea Otter 841 episode artwork
#27
06/06/2026

Watch, hide, vanish. That is the Sea Otter rulebook... unless you're Otter 841!

Learn more about this epic surfboard-stealing weasel in this weeks episode.


A Fish Story-Salmon
A Fish Story-Salmon episode artwork
#26
05/30/2026

So much a part of the Pacific Northwest, Salmon helped build the forest! Tune in to KMUN 91.9 FM in Astoria Oregon Fridays at 12:01 for your 5 minute dose of coastal ecology with Mari Ana Trench on the Littoral Zone!


Sand Dollars
Sand Dollars episode artwork
#25
05/23/2026

Sure, they might make a lovely souvenir....but what exactly are you taking home in your beach bag? Tune in Fridays at 12:01Pm to KMUN Community radio in Astoria, Oregon for your 5 minute dose of coastal ecology.


American Bald Eagles
American Bald Eagles episode artwork
#24
05/16/2026

Ben Franklin wanted a turkey to be the National Bird...and he might have been on to something!

Tune in to KMUN 91.9 FM in Astoria, Oregon on Fridays at 12:01 PM for your 5 minute dose of Pacific Northwest ecology!


Hermit Crabs
Hermit Crabs episode artwork
#23
05/09/2026

If you think your housing search is rough, check out these little naked fellows, pant-less, and searching for new digs is a regular occurrence with these tiny crustaceans. Tune into KMUN 91.9 FM in Astoria for your 5 minutes of coastal ecology!


Roosevelt Elk
Roosevelt Elk episode artwork
#22
05/02/2026

Exhibiting an ability to stop traffic that would make any influencer jealous, this massive forest-dwellers continue to thrive around our Pacific Northwest forests. Tune into KMUN 91.9 FM Fridays at 12:01 for your 5 minute dose of coastal ecology!


Mountain Lions
Mountain Lions episode artwork
04/25/2026

Go ahead call them a cougar, or a puma, or a catamount, these big cats are hiding in the shadows waiting for their next meal-but it's not you! Tune into KMUN 91.9 FM Astoria every Friday at 12:01 PM for your 5 minute dose of Pacific Northwest ecology.


Raccoons A.K.A. Trash Pandas
Raccoons A.K.A. Trash Pandas episode artwork
#20
04/18/2026

There's a lot of brain power out there tearing up your trash! Listen in for 5 minutes of coastal ecology with The Littoral Zone from KMUN 91.9 FM in Astoria, Oregon


Tufted Puffins
Tufted Puffins episode artwork
#19
04/04/2026

That beak's doing a lot more than catching eyes! Tune into KMUN 91.9 FM Astoria on Friday's at 12:01 PM to soak up 5 minutes of Pacific NW ecology!


Whale Watching in Spring-Humpbacks
Whale Watching in Spring-Humpbacks episode artwork
03/21/2026

They're baaackkk! And they're bringing their newborn calves with them. Tune in to KMUN in Astoria at 91.9 FM for your 5 minute dose of Pacific Northwest Ecology Fridays at 12:01Pm.


Velella Velella By the Wind Sailors
Velella Velella By the Wind Sailors episode artwork
#17
03/14/2026

Every year, these tenacious sea sailors wash up on our Pacific Northwest shores to panic beach goers.., listen in to learn more about our own 'prophylactics of the sea'-Velella Velella!


Geronimo Beavers
Geronimo Beavers episode artwork
#16
03/07/2026

Sometimes, when someone thinks you're stinking up the neighborhood, they go to extreme measures!


Bats!
Bats! episode artwork
#15
02/28/2026

Save the Tequila! Without their specialized pollination for the agave plant, no tequila for you! Learn this an much more in this 5 minute ecology lesson from Mari Ana Trench.


Grebes a.k.a. 'The Fonz of Waterbirds'
Grebes a.k.a. 'The Fonz of Waterbirds' episode artwork
#14
02/21/2026

Beautiful and silent as they dive seamlessly into the water to hunt for prey,,,take away the water, not so much! Tune into KMUN 91.9 in Astoria, Oregon on Fridays at 12:01 PM for your 5 minute dose of Pacific Northwest ecology.


Owls
Owls episode artwork
#13
02/14/2026

Did you think you need a chiropractor? Try being an owl! With fixed eyes, that neck rotation takes on a whole new level of necessity...Tune in to KMUN 91.9 FM in Astoria Oregon Fridays at 12:01 PM to get your 5 minutes of Pacific Northwest ecology!


Steller Sea Lions
Steller Sea Lions episode artwork
#10
02/07/2026

They're large, they're loud, and they are an important addition to our Pacific Northwest shores!. Tune in to hear some fun facts about our Pacific Northwest Steller Sea lions.


Giant Pacific Octopus
Giant Pacific Octopus episode artwork
#12
02/07/2026

5 minutes of informative fun about these highly intelligent sea creatures that are masters of disguise. Tune into the Littoral Zone on Astoria's KMUN Community radio @ 91.9 FM Fridays at 12:01Pm


The Pelican Brief
The Pelican Brief episode artwork
#1
01/31/2026

Dive bombing? Check. Bratty babies? Check. Cooperative flying pattern? Check.

Come learn about the beautiful Brown Pelicans that grace our amazing coast. Listen in on KMUN radio in Astoria, Oregon on 91.9 FM.


Sea Stars (A.K.A. Starfish)
#11
01/31/2026

Did you think human digestion was complicated? Tune in to KMUN 91.9 FM in Astoria, Oregon to learn about the unique digestive practices of those cute little Starfish!


Steller Sea lions
Steller Sea lions  episode artwork
#10
01/24/2026

They're loud, they're loud, and they are an important addition to our Pacific Northwest shores!. Tune in to hear some fun facts about our Pacific Northwest Steller Sea lions.


Dungeness Crab
Dungeness Crab episode artwork
#9
01/17/2026

Not just a tasty meal, Dungeness Crab is an important component of a our well-regulated fishingindustry. Tune into KMUN at 91.9 FM in Astoria to learn about Pacific NW ecology.


Cetaceans (Whales)
Cetaceans (Whales) episode artwork
#8
01/10/2026

It's whale watching season on the North Pacific coast, strap on some knowledge and grab your binoculars!


The Mermaid's Purse: The egg case of a Skate
The Mermaid's Purse: The egg case of a Skate episode artwork
#7
12/27/2025

Something new is washing up on our shores of late, and you might be lucky to find one! Tune into KMUN at 91.9 FM Astoria this Friday for your 5 minute dose of NW Coastal Ecology.


Call Me by My Name; The Gull
Call Me by My Name; The Gull episode artwork
#6
12/20/2025

Our highly misunderstood shorebird, the Gull. That's right folks, drop the 'Sea' 'cause these birds can't be caged by your random titles! Tune in to KMUN in Astoria, Oregon on Fridays at 12:01 to learn more about these iconic thieves.


Pyrosomes - Secret Code Name: Sea Pickles
Pyrosomes - Secret Code Name: Sea Pickles episode artwork
#5
12/13/2025

What are these things showing up all over the beach lately? The stealth submarines are filled with individual zooids, tune in to The Littoral Zone on KMUN Fridays at 12:01 find out more!


The Wrack
The Wrack episode artwork
#2
11/22/2025

No pristine white beach here in the Pacific Northwest! We've got a whole colony of activity feeding off all that bull kelp and drift wood. Tune in to KMUN in Astoria for more episodes of The Littoral Zone Fridays at noon, just before Science Fridays.


Coyotes (and Friends)
Coyotes (and Friends) episode artwork
#3
11/22/2025

The coyotes are coming, and they're bringing friends. Tune in to KMUN in Astoria, Oregon on Fridays at 12:01 before Science Fridays for some fun ecology lessons.


Jellyfish
Jellyfish episode artwork
#4
11/17/2025

Older than trees, Jellyfish of the Pacific have been floating our shores since the beginning of time. Offering more than 200o (discovered) species, tune in with Mari Ana Trench to get a little education on how these beautiful floaters live.