Wonderful Explanation of Tides

Returning visitors often ask why the tide isn’t the same as it was when they were last at FMR a week, a month, or a year ago. The short answer is that tides are caused primarily by the motion of the moon. The KQED Quest web site has a wonderful video explaining how the pull of the moon creates high and low tides, complete with an animation. It’s less than seven minutes long and well worth watching! Just follow this link and click the “play” button on the video.


5 Responses to “Wonderful Explanation of Tides”

  1. monique says:

    Fitzgerald Reserve is one of the neatest places on the planet. We are so fortunate to have such a great natural resource at our fingertips.

  2. Awesome video. Just what I needed to augment my lesson. 🙂

  3. Mary Black says:

    Very informative. This is not meant to be negative at all, but it would have been equally informative to show the tide rising and receding as the explanation was going on.
    Thanks for the video.

  4. Dan says:


    Your site says the best times to visit are when the tide is at zero or negative when the rocks are exposed. Is it advisable to take a small child if the low tide is at 6″? I am not sure how wet the rocks will be at this level.

  5. Conaill says:

    Similar to Dan’s comment above – when is not a good time to visit for anyone…is it at 3 inches, 6 inches, beyond…understanding that the lower the tide, the more available rock and probably a better view of the tidepool world…but at what point is it just not worth visiting.

    Many thanks!