Questions, answered

Frequently asked questions

Why are Sanibel tides different?

Sanibel runs east to west instead of north to south, so it faces the Gulf at an unusual angle, and the tide here is a mix of two daily cycles that drift in and out of step through the month. Some days you get two clear low tides, some days effectively one long one. That is why a generic Gulf tide chart often disagrees with what you see on the beach, and why we derive a tide for each beach rather than borrowing one station for the whole island.

What is a minus tide?

Tide heights are measured from a low-water line called mean lower low water. A minus tide is a low that drops below that line, a negative number on the chart. Those are the best shelling mornings, because the water pulls back farther than usual and exposes sand and shell beds that are normally underwater.

Is shelling legal on Sanibel?

Collecting empty shells is fine. Taking a live shell, one with the animal still inside, is illegal everywhere in the City of Sanibel, and the rule is strict. The simple test is: if it moves, it is alive, so put it back. The same goes for live sand dollars, sea stars, and urchins.

When is the best time to go shelling?

Aim for the hour or two around a low tide, and the lower the low the better. Our home page reads the day for you and names the best beach and window for right now, so you do not have to work it out from the chart yourself.

Which Sanibel beach is best for shells?

It changes day to day with the tide, the wind, and what has washed in. Rather than crown one beach, we rank all 10 beaches for each day so you can pick the best one for when you are actually going.

Does wind or a storm change the shelling?

Yes. A steady onshore wind, and especially the days right after a front or a storm, can pile new shells onto the beach. When live data is available we fold wind and recent-storm signals into the recommendation; when it is not, the tide-based answer still stands on its own.

How accurate are these tide times?

They are NOAA-derived predictions, not live measurements, and for most beaches they are blended from the two nearest stations. They are reliable for planning a walk on the beach but are estimates, not for navigation. Our methodology page explains exactly how each number is figured.

Do I need to worry about the currents at the passes?

At Blind Pass and Redfish Pass the tide moves through a narrow cut very fast, and the current can be dangerous for swimming even when the beach looks calm. Turner Beach and Blind Pass Beach carry a swift-current note for that reason; they can still be excellent for shelling from the sand.

Are the tides shown in island time?

Always. Every time on the site is Eastern time, the island's own clock, no matter what time zone your phone thinks it is on. We label it so there is never any doubt.

Is there a SanibelTides app?

Not in the app stores yet: native iPhone and Android apps are in the works. In the meantime you can add this site to your phone, and it behaves like an app, our shell icon on your home screen, opening straight to the day's answer. It takes about a minute in Safari.How to add us to your home screen