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Volunteer with Sisters' Islands Marine Park

Ways to volunteer

You can volunteer with Sisters' Islands Marine Park in the following ways:

Biodiversity Beach Patrol

The Biodiversity Beach Patrol is a citizen science initiative where community members gather valuable information about sea turtles and horseshoe crabs along the coast.

What volunteers do

Volunteers patrol the shores and gather data on sea turtles and horseshoe crabs. The data collected will help us to monitor the size of horseshoe crab and sea turtle populations in Singapore, so we can develop strategies to sustain or enhance them.

  • When: June to September yearly. The patrols take place between 5am and 7am.
  • Frequency: 6 days a month per site

Who can volunteer

We seek volunteers who are:

  • Passionate about marine life.
  • At least 18 years old.
  • Able to commit to a pre-patrol training and at least 2 nights of patrol.

You do not need experience. We will provide online training that covers basic horseshoe crab and sea turtle identification, as well as beach patrol survey techniques.


If you are under 18 years old and wish to participate, you must be accompanied by a parent or guardian for all sessions. Contact us at for more information.

How to volunteer

To volunteer, you must:

  • Sign up for our training sessions.
  • Attend the online training.
  • Pass an online assessment after the training.


You must attend the training even if you have experience with turtle beach patrols overseas, as those may differ from our local context.

What to bring when you volunteer

Please bring a:

  • Smartphone with access to the internet.
  • Measuring tape or ruler.
  • Torch with red filter or torch with red cellophane tape across the front (as the patrols are before dawn).

No other specialised equipment is required.

Volunteer as a St John's Island guide

St John’s Island guides introduce participants to St John’s Island’s rich biological and historical heritage.

The guided walks take place every first Sunday of the month, from 8.40am to 12.30pm.

    Who can volunteer

    We seek volunteers who are:

    • Passionate about biodiversity or history.
    • At least 16 years old.
    • Interested in interacting and engaging with people from all walks of life.
    • Able to commit at least 1 guided walk per year

    How to volunteer

    To volunteer as a St John's Island guide, you must:

    • Sign up for our training sessions.
      • The next training session is now open. To sign up, register for our mailing list. We will follow up with an email to invite you to the training sessions.
    • Attend an online training and a physical training on St John's Island.
    • Pass the on-the-job training.