Flag Day 2021


Public Subscription Permit No.: FD/R044/2021

Though Hong Kong is densely populated, 3/4 belongs to the countryside with rich biodiversity of 5,943 types of recorded marine life which equal to approx. 26% of all in China.  The ecosystem is maintained because of the vast biodiversity taking its own role and also becoming interdependent. 

It is vital to maintain biodiversity.  Yet, pollution caused by humans, over-exploitation and damage leads to the loss of marine habitat and increase of debris threatening marine lives, eventually humans will become one of the victims. Ocean Park Conservation Foundation, Hong Kong (OPCFHK) is going to host the Flag Day on Hong Kong Island on August 21, 2021 to raise funds for local cetacean stranding cases, community & public education and local conservation research projects.

The theme of this Hong Kong Island Flag Day is “Cherish the Hidden Treasures”, each flag is printed with an endangered species of local habitat. The Flag design will promote local biodiversity with 6 species, Golden Birdwing, Green Turtle, Corals, Horseshoe Crab, Beale’s Eyed Turtle and Indo-Pacific Finless Porpoise. OPCFHK aims to raise public awareness on the vast local biodiversity and understand the importance of protecting endangered species and ecosystem.

The Director of Social Welfare has given approval to three organisations to sell flags to solicit donations, one each at the Hong Kong Island region, Kowloon region and the New Territories region on August 21, 2021 and OPCFHK is authorised to conduct flag sale in Hong Kong Island region on that day.  


Indo-Pacific finless porpoise

Listed as a vulnerable species, it is estimated that a mere 200 finless porpoises remain in Hong Kong and adjacent waters. Finless porpoises face a number of threats, such as fishing net entanglement, habitat loss and disturbance, marine traffic and pollution.

Beal's eyed turtle

Ocean Park Conservation Foundation, Hong Kong (OPCFHK) has funded a research project to strengthen trade enforcements for local species, to enhance enforcement against the illegal trade of wild turtles.

Green Turtle

Green turtles often mistake plastic bags for jellyfish, which can lead to death. To protect green turtles and other marine life, starting from today, join our No Straw Campaign and aim for a plastic-free lifestyle.

Golden Birdwing

The eye-catching appearance has made the golden birdwing vulnerable to poaching. Therefore, the golden birdwing and other common birdwings are protected by an international treaty and Hong Kong law. The capturing, trading, importing, and exporting of specimens are prohibited.。

Chinese horseshoe crab

To conserve local horseshoe crabs, OPCFHK is committed to publicizing horseshoe crab conservation messages to the public. This has been achieved through scientific education initiatives such as the Juvenile Horseshoe Crab School Rearing Programme, population survey, cleaning mudflats, and the restoration of horseshoe crab habitats.。

Acropora corals

The rapid decline of corals is mainly derived from human activities. It is understood that climate change, ocean acidification, and chemical pollution all contribute to coral degradation. Another major threat comes in the form of an often-neglected pollutant – chemical sunscreen, in particular, that can harm corals. To conserve our beautiful corals and help them regain their wonderful colours, let’s choose to cover up our body with sun-protective clothing next time we visit the beach.

Volunteer Registration

As volunteers, receive an e-certificate and “buy one get one free Ocean Park general admission ticket coupon”, valid from August 21, 2021 till December 31, 2021 and not valid from December 25 - 27, 2021.

Thank you for your kind support.  Our volunteer registration is full. 

Gold Flag Purchase 

To raise funds for OPCFHK,  limited edition gifts were available for purchase*:

HK$ Limited edition gifts

Mask printed with the 6 local endangered species (10pcs)



Adorable panda face mask holder (1pc)

Adorable Panda Face Mask Holder Video 


*All gifts are available on a first-come, first-served basis.

Gold Flag Purchase has been completed. 


Mask Sponsor






For enquiries, please email to opcf@oceanpark.com.hk  or contact us at 3923-2300