Mile 116

Seven Devils cliffs, Cape Arago South Cove
Coos County

Latitude: 43.298859947005
Longitude: -124.395189847880
  • Motor vehicle travel is prohibited from south jetty at Coos Bay, (43° 21.1158', Mile 123) southerly to Fivemile Point (43° 13.2228', Mile 109), except as follows: (A) Motor vehicles are allowed at any time on the ocean shore at the south jetty of Coos Bay (43° 21.0990', Mile 123), southerly to (43° 21.0036', 124° 20.4822', Mile 123); (B) Motor vehicles are allowed at any time on the ocean shore at the north end of the Sunset Bay State Park (43° 20.0880', Mile 120) for the purpose of boat launching.
  • Motor vehicle travel is prohibited from south jetty at Coos Bay, (43° 21.1158', Mile 123) southerly to Fivemile Point (43° 13.2228', Mile 109), except as follows:
    (A) Motor vehicles are allowed at any time on the ocean shore at the south jetty of Coos Bay (43° 21.0990', Mile 123), southerly to (43° 21.0036', 124° 20.4822', Mile 123);
    (B) Motor vehicles are allowed at any time on the ocean shore at the north end of the Sunset Bay State Park (43° 20.0880', Mile 120) for the purpose of boat launching.

Tides: NOAA Tide Predictions. Click on the station nearest to your location to see predicted tides in graphical and tabular formats.
Seven Devils cliffs, Cape Arago South Cove
Mile 116 Reports (40)


November 20, 2022 - alaingamerica

The weather had very light cloud cover, but I logged it as Sunny. The kelp in the wrack line looked old to me, but it was very crusted with salt, which may have fooled me. I found lots and lots of sea stars. One individual caused me concern and more

  • Cloud cover
  • Sea Star
  • erosion
  • Cliff walls
  • Looking back at beach
  • Not much water
  • Gumboot Chiton
  • Southern cliffs
  • future fallen trees
  • fallen tree
  • Pink anemone
  • grocery shopping
  • unique sea moss
July 16, 2022 - alaingamerica

A minus tide occurs this Summer weekend and Parks had a sign encouraging the public to explore the tidepools. I believe this does account for the increase in visitors. A pleasant day to do so. I'm happy to report I saw many Ochre Stars present. I do believe I more

  • tidepool sign
  • Cloudy day
  • Unusual find
  • Pidgeon Guillemot
  • dwarf limpets
  • Another unusual find
  • Red Sea Urchins
  • clam sign?
  • Sea Lettuce
  • Vultures
May 1, 2022 - alaingamerica

I came for the minus tide since the weather would be dry. Very light human use. Very healthy seeming population of Pisaster ochraceus, and a possibly corresponding healthy seeming population of urchins, compared to overgrowth in seasons past. Noticed a bit more kelp in wrack than usual. Spring time has more

  • Wave action
  • mud
  • Fresh kelp
  • Baby Sea Sacs
  • Spring green
  • Ochre Star
  • White surf grass
  • rain rivulets
  • Coralline Algae
  • Not sure
  • Wild
  • Similar Wild
  • Hanging around
  • gumboot chiton
  • OIMB students
  • Getting into it
  • driftwood plant
January 9, 2022 - alaingamerica

After a week of heavy rain, it was a lovely sunny January day at the South Cove. The rains softened the trail up enough to form foot "steps" down to the beach. A couple saw some land slide, said "it wasn't bad", but they did decide to relocate their more

  • Sunny Cove waters
  • foot "steps"
  • Alternate 'trail"
  • Erosion
  • Styrofoam in driftwood
  • Upright coralline algae
  • Mossy Chiton and friends
  • A boat in the ocean
  • A look back
  • Another look back
  • Easy walking


October 9, 2021 - alaingamerica

A pleasant day at South Cove, not many visitors. A stranded California Sea Lion, a call went out to the Stranded Marine Mammal Network. Saw a Mottled Sea Star, Evasterias troschelii, and may do a Sea Star Survey, even though I saw no Sea Stars suffering Wasting Disease. I more

  • Calm Clear Day
  • Less Driftwood than usual??
  • Sick looking California Sea Lion
  • Not SSWD
  • Live Mottled Star
  • Pisaster ochraceus
  • smallish gumboot chiton
  • Pale Sea Anemone
  • Artful Algae
  • WD40 used as fishing lure
  • Unique beach visitors
  • deer navigating the cliffs
  • Minimal beach wrack
  • Tableau of death
  • Fall colored kelp?
July 31, 2021 - alaingamerica

A pleasant weekend day out at the Cape brought several groups to the South Cove, despite it not being a minus tide (when I typically do my reports). Three people fishing reported catch 3 fish each. A new water source at the base of the access trail will be more

June 27, 2021 - alaingamerica

A lovely day during a minus tide event had many visiting the tidepools. I found my first Sea Cucumber! Also got several views of a lemon dorid. Did a Sea Star survey and did not find any wasted Sea Stars.  A gorgeous day and minus tide exposing beautiful boa more

  • The beautiful South Cove on a Sunny Sunday morning
  • crab tracks?
  • Peculiar limpet
  • Beautiful coralline algae
  • California Sea Cucumber
  • Enlarged Cucumber
  • Blood Star
  • mystery
  • Sea Lemon with Gumboot
  • On the move
  • glow in the dark anemone
March 28, 2021 - alaingamerica

I did walk my complete mile (as much as can be walked) this time. I paid special attention to the tidepools on the Northern edge of South Cove and around the point. Many people came to enjoy the pleasant weather and the minus tide. I found one ochre sea more

  • The first good day of the year
  • more erosion
  • Survey markers
  • Spring kelp
  • Ochre star regrowing arms
  • Bright orange algae
  • urchin carpet
  • red sea urchin
  • footlong gumboot chiton
  • distressed chiton
  • dead chiton
  • leather chiton
  • henricia leviuscula
  • sick ochre
  • lone arm
  • red sea anemone
  • multi-colored star
  • tire
  • line in the sea
March 20, 2021 - alaingamerica

I didn't do a complete survey today. But wanted to say more than I could in a dispatch.  I was at the Southern tidepools 3 days ago for Sea Star Observation Survey Training and we found 24 stars, one Mottled Star and one Ochre Star that seemed to have more

  • Harlequins
  • Mysterious creature
  • Valve open
  • Another mysterious creature
  • Detail view
  • Possible sick Star?
  • Lunch?
  • Sea Urchins
  • Mottled Star from Wednesday
  • Possible lesion
March 20, 2021 - alaingamerica

I didn't do a complete survey today. But wanted to say more than I could in a dispatch.  I was at the Southern tidepools 3 days ago for Sea Star Observation Survey Training and we found 24 stars, one Mottled Star and one Ochre Star that seemed to have more

  • Harlequins
  • Northern Kelp crab?
  • Anemone eating cucumber?
  • Detail view
  • Star among urchins
  • Sea Urchins
  • Unhealthy star?
  • Lesion?
  • Mottled Star
  • Pair of Harlequins
February 7, 2021 - alaingamerica

I'd heard about some significant tree blow downs on the pack trail,  but found the usual situation in the cove. There's always small trees and dirt sloughing off the steep cliffs. Really pleasant afternoon. Some people found the terrain more challenging than others. I did a quick survey,  but more


October 17, 2020 - alaingamerica

The weather cleared during my visit. The sea was very calm. I decided to spend more time in the high tide zone and so noticed evidence of a land slide that happened earlier this year. The extra attention could account for my impression of more trash than usual. I more

  • Weather clearing
  • Driftwood construction
  • burned driftwood
  • dead crabs
  • dead gumboot chiton
  • old slide
  • Surviving the slide
  • Snorkeler
  • Halloween? litter
  • Red Kelp
July 25, 2020 - alaingamerica

Pleased to see so many  families exploring South Cove's tidepools respectfully.  I  saw a racoon out there. I  do depend on other visitors to cue me in on interesting finds, but in all my years of coming here, this is the first time I've seen one. I brought my more

  • Map
  • Racoon siting
  • Sea Star
  • Sea urchin
  • Staged?
  • Micro plastic
June 27, 2020 - alaingamerica

Many people enjoying the tidepools and beach as the weather began to get better in general. Wasn't able to get to S. Cove during the parks shutdown. This was the second low tide happening on the weekend in reasonable daylight hours since the reopening. I must have a very more

  • Mussel beds
  • Beauty shot of mussel beds
  • Sea Urchins are home
  • Gumboot chiton
  • Sandy Chiton
  • Chitons
  • Sea Stars
  • Sea Anemone
  • Live crab
January 19, 2020 - alaingamerica

Fairly low tide during daylight hours on a dry day brought only a few visitors. Muddy trail access inspired creative entry points. Seasonal waterfalls flowing heavily. Observed a breeding pair of Harlequins out in the surf. I believe I saw an emerged more

  • Low tide to compare to King Tide
  • worm trails on tide pool rocks
  • pale anemone
  • emerged nudibrach?
  • Sea Star
  • Chiton
  • Limpet family
  •  creative access points
  • creative access points
  • Seasonal waterfall
  • Seasonal waterfall
  • Harlequins
  • Beauty shot
January 11, 2020 - alaingamerica

Though Cape Arago was receiving possibly record number of visitors, no one was trying to surf or otherwise visit South Cove. The tidepools were completely submerged, numerous driftwood were tossed by the more

  • Submerged tidepools
  • Floating driftwood
  • Driftwood shifting in the surf
  • Most of access trail not impacted
  • Heavy visitation creates traffic


December 25, 2019 - alaingamerica

I have always been curious what is happening at my mile during high tide. I generally go at low tide to access the most sand and tide pools I can.  Since Christmas day had a king tide, I did a brief survey. I was surprised to see the number more

  • King tide st South Cove
November 1, 2019 - alaingamerica

Nice day at the beach. Not many vistors despite the fair weather. Saw lots of crab shells in the wrack line. Not sure if it's a molt. See pix. Tide higher than when I normally more

  • wrack line
  • eyeballs?
July 4, 2019 - alaingamerica

A beautiful 4th of July at the South Cove. Many people accepting the invitation by the Park to explore the tidepools. Most people on their best behavior, though I did see some kids climbing a crumbly cliff. read more

  • Drift line
  • Tidepoolers
  • Tidepoolers
  • six rayed sea star
  • Rock or Eel fish
  • Driftwood re-arrangement
  • bleached eel grass
  • White stuff on rocks
  • lots of lumps on the beach
  • live snail
  • live snails
  • Chiton
  • Limpets
  • Blooming bush
April 21, 2019 - alaingamerica

I came armed with two fully charged camers and didn't see anything unusual. Beach was cleaner than last more

  • Fisherman
  • Catch of the day
  • Minus tide
February 17, 2019 - alaingamerica

A very nice day. Went to try and get better photos of the Harlequin group I saw last time, but if they were there, they were out of range for photos. My battery ran dead fairly soon anyway. I observed a strange tidepool creature, but had no camera! This more

  • Heron
  • South Cove
January 26, 2019 - alaingamerica

Very quiet day, despite the fine weather. Saw a boat closer in than I've ever observed. 3 Cormorants and a flock of Harlequin ducks. Two Sea Stars. 3 Chiton, one a gumboot I'll swear I photographed years ago when it was a baby. Found an unusual net. Wasn't prepared more

  • small net
  • Close in boat
  • beach access
  • Dead fish
  • Gumboot Chiton
  • 3 cormorants
  • Chiton
  • Chiton


May 19, 2018 - JamieF

A beautiful day out, great low tide. People were respectful of the intertidal habitat. Having the watchful eyes of several OIMB graduate students on hand was no doubt a helpful more


April 2, 2017 - alaingamerica

One of the first nice weekend days of the season, and the most humans visiting the mile that I personally have ever more

February 19, 2017 - alaingamerica

Just a cursuray visit. Saw four people and 1 dog in total. 3 vehicles in car park. Noticed lots of small plastic fragments in wrack line. Found a boat bumper (?) from Cape Sebastian. Wonder if more land fallling into cove. Plenty of trash in cove, perhaps more than more

  • Tree falling further?
January 29, 2017 - alaingamerica

Not much evidence of the recent high tides. Found unusual to me things in the low drift line. An abundance of small snails on rocks. I myself murdered quite a few by walking out on the rocks. Doesn't seem to be any shortage of adult snails in the cove, more

  • red sea anemone


January 1, 2016 - JamieF

Walked on beach southward along boulder field to furthest extent practical and returned. Mostly found refuse and very little/no marine bird or mammal more


May 9, 2015 - alaingamerica
A high number of people for this mile, enjoying the low tide. Will be returning with a mission to track the number of sea stars and sea urchins. Will edit report once I identify the unusual creature I observed in a tide more
  • This creature is roughly adult hand sized, rounded and firm to the touch. You can see the  hermit crabs that were dancing around on it's surface.
  • New trees down in slide" "Directly south of beach access trail
January 1, 2015 - JamieF
Collected approx. 60lbs of litter, mostly plastics (see photo)Erosion of cliffs more


December 13, 2014 - alaingamerica
The big news is the landslide, which threatens the access trail to the south cove. The slide began last winter and continues to move. (I have been remiss in visiting my mile and wish I would have done a report when the slide actually started. Visit your miles regularly, people!) more
  • Was modified last spring after initial slide. Narrow, muddy, slick, unstable looking
  • There was ground water flowing on either side of the landmass.
  • Exposed tree roots. Wouldn't be surprised if it dropped before the winter is over
  • Probably exposed during initial slide.
  • Obvious slump of land detaching from main part of cliff
  • Beach access formerly went through this area, just uphill from here, the State put in railroad tie steps and switched the trail back
  • A memorial bench used to rest on this concrete pad. The State removed it before it could fall into the chasm. The trail is being undercut at the far edge of the concrete pad
  • a view across the chasm made by the landslide.
  • A small trail used to skirt the edge up top. No more.


February 23, 2012 - junebugrudd
Everything was quiet and reasonably undisturbed. Kelp, shells, rocks, wood and land- and ocean-based debris in the driftline. Common Loons and dabbling ducks in the bay. Major cracks and landslides in the bluff resulting in tree fall and retreat in the bluff. Five people tidepooling. The two areas of more
  • Major erosion of walkway down to the beach
  • Trees falling, more erosion
  • Tide pools alive!
  • Example of litter at this site
  • Healthy bunch of beach wrack


December 23, 2009 - alaingamerica
Due to the tide height, this was not an ideal day for a CoastWatch of mile 116. Anything that might wash up was certainly submerged or floating in the cove. However, I was very surprised at the volume of human activity. Some of the 10 surfers were excited about more
  • Note call numbers on plane. It was heard that this plane was associated with the group of 10 surfers visiting mile 116 on this day.
  • Majority of party of 10 surfers visiting mile 116. (and me in the blue coat)
  • I've learned that South Cove is in the very Northern part of their range, but it is unusual to see them at the beach!
October 3, 2009 - alaingamerica
The South Cove appears much as it always does, beautiful and serene. Only myself, my partner and two other visitors during my visit. I have never noticed Black Oystercatchers in the cove before. They were at the tip of the furtherst north border of my mile. In addition to more
  • top view of octopus remains found on beach this trip.
  • bottom view of octopus remains.
  • I think this guy lives in this area. I have a photo of another Heron from a previous visit. Maybe it's the same one?
  • I'd never noticed this snail before, so I'm posting it here.
May 25, 2009 - alaingamerica
Extremely low tide offered opportunity to look at rarely exposed areas. Found a vivid royal purple sea star. Overheard one tidepooler telling another she saw two dead sunfish. Many animal casings(crab) and kelp/algae in driftline. One dead unidentifiable bird. Sea lions trolling waters at mouth of cove. Moderate human more
  • A shot of south cove at a -2.4 tide.
  • Another shot, the north side of south cove. The most exposed rock I've ever seen there.
  • I was impressed with the coloration of this ochre sea star. I've never seen such a vivid purple. Hopefully it shows on the picture.


December 5, 2008 - alaingamerica
Was able to positively identify ducks I saw last time as wintering Harlequins. Great Blue Heron was confident we would not be charging out over the rocks to harm it, though it did keep a watchful eye on us. Only found 2 ochre sea stars (migrating to deeper waters more
  • Great Blue Heron at South Cove, Cape Aragon, December 2008
  • GBH flies out to sea from South Cove, Cape Arago
  • Wintering Harlequin adult male in breeding plumage, swimming in the waters of South Cove, Cape Arago
  • 3 adult male Harlequins in breeding plumage, sunning on rock in South Cove, Cape Arago
  • Need help identifying this.  Was found in South Cove, Cape Arago. Is about the size of two digits of an index finger. Thank you!
September 21, 2008 - alaingamerica
This visit was a few months from my last visit. I found this quite helpful in observing how the piles of kelp I saw last visit are being broken down. My goal is to get to my mile much more frequently! Kelp/algae in driftline. Many hermit crabs without their more
  • Pretty day, eh?
  • Another reference point. Pic looks like could have been taken at Leslie Gulch.
  • Such a nice day at the beach!
  • Sorry for poor quality. I needs me a telephoto and an idenfication guide...
June 22, 2008 - alaingamerica
Heavy thick mats of kelp and seaweed in driftline. State Parks ranger, who was guiding a tidepool walk, assured me large kelp piles were normal. Two dead purple shore crabs. Heavy human impact (42)-- walking, tidepooling, sitting or playing in sand. Two more
February 2, 2008 - alaingamerica
The mile looks much the same as last visit. It seems like a new tree has slid down the bluff. Erosion is continuing at northern border of mile 116. Five rain-fed waterfalls flowing at full force into the mile. Rain water does not seem to bother sea anemones as more


June 16, 2007 - alaingamerica
Many people taking advantage of the very low tide. Oregon State Parks had a ranger guide people through the tidepools. I observed enthusiastic, but respectful exploring. Very light wrackline. Observed Two Gumboot Chitons and many purple olive snails at a very low tide. Three to four dead crabs. Heavy more
March 11, 2007 - alaingamerica
Was the first warm, sunnyish weekend day. Lots of people in love with the tidepools. Kelp/algae and land-based debris in driftline. Sunstars, urchins, chitons, pink anemone and seaweeds in South Cove tidepools. Heavy human impact (25)-20 exploring the tidepools, others sitting or playing in sand,4 more
  • I would like to see this critter open some day!