Just wanna share something re the above subject.
This is runned by some marine conservation volunteers group
I have been to one recently and I think it is very educational and a nice experience. If you are lucky, may see some interesting marine fish/prawn species, and especially good for taking pictures.
Anyway, next Reefwalk is opend for bookings - First Come First Serve Basis. Have Fun!
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Join us at our next ReefWALK at Kusu Island. Vacancies are on a
first-come-first serve basis.
To sign up, email reefwalk@bluewatervolunteers.org before 08 April 07.
The details of ReefWALK are as follows:
Date: 21 Apr 2007 (Saturday)
Time: 6am - 10am
Meeting Venue: To be confirmed
Walk Venue: Kusu Island
Cost: $15 per person
Info to be included: full name, contact number, email, total number
of participants, contact of next-of-kin, age of children (if any)
ReefWALK Team
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This is their site. http://www.bluewatervolunteers.org/content/view/13/37/
For me, I prefer to go alone on my own time and at my own pace. 
, see many 
and 
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