The last of the series of lowest tides of the year occur each morning this weekend.
The lowest low tides start Thursday, Aug. 1 with a minus tide of 1.5 feet, as measured by the U.S. Geological Survey at Waldport.
The low tide Friday, Aug. 2 is minus 1.6 feet at 8:44 a.m. and then minus 1.3 feet at 9:28 a.m. Saturday. Sunday the low tide of minus 0.9 feet occurs at 10:12 a.m.
Combined with high tides of 6.6 to 7 feet, the difference is almost eight feet.
The previous low tides of the year were in early June and then again during the July 4 holiday.
The major low tide events occur in the days directly following a new moon.
Because the low tides inspire people to check out tide pools, here are some from the Oregon Department of Fish and Wildlife tips on tide pool etiquette :
Tide pool organisms are well adapted to meet great challenges at the sea’s edge — but they can also be very sensitive to the kinds of impact people have. Tide pools that may appear everlasting may take many years to recover from a single damaging event. This remarkable and valuable resource is well worth protecting and can be safeguarded by keeping a few points in mind:
Watch your step: Step on bare rock or sand whenever possible—for your safety as well as the safety of the rocky shore inhabitants. Many of Oregon’s popular tide pools have plenty of viewing opportunities at the sand-rock interface (where standing on rock can be avoided almost entirely). Unless a walking stick is truly required for your safe travel, please leave it behind: the small tip applies a huge amount of killing force to life on the rocks.
Observe, rather than capture: Slow down, look closely, and watch patiently to observe the sea life in its home. Quietly watching a pool or gently moving seaweed aside will reveal individuals and behavior that would go unnoticed in a rush.
Touch gently: Touch the animals very gently with only one wet finger to lower the chance of harm. Do not poke or prod.
“If you pry, it will die.” Clamping or attaching to the rock is how many tidepool inhabitants survive heavy wave action. Prying them off the rocks will damage them as well as leave them vulnerable to the incoming surf.
“Keep it low and let it go.” Scuttling crabs might tickle, and they may pinch and will try to walk off your hand. If you must pick them up, keep your hands low to the ground so they don’t have far to fall in an accident. Return any picked up inhabitant as soon as possible to its home.
Replace all material you move: The rocks, shells, and seaweeds give protection to the animals below—including the ones you didn’t see: it is important to return moved items to exactly the way you found them.
Don’t take it home — alive or dead: It is nearly impossible to find a shell with no other living thing in it or on it. “Empty” shells are critical habitat for many other organisms, from hermit crabs to limpets to seaweeds, and more. (In fact, even the minerals in the bits dissolve and enter the water, where they’re taken up later and used to build new shells.)
Respect specially designated areas: A few Oregon Coast tidepools are closed to collecting to protect special sites. Tide pool creatures are protected by Oregon Department of Fish and Wildlife regulations. Check “marine zone” regulations to find open areas and limits for fish and invertebrates and general ocean shore recreation rules for marine plants and non-living items.
