OGU

Ocean Guardian Union

Protecting Hong Kong’s coastlines and underwater environment through cleanup action,
field observation, and open environmental data.

Beach cleanup · Seabed cleaning · Marine debris reporting

Explore Data Map

Get Involved

Cleanup Action

Field Observation Data

Volunteer & Partner Network

WHAT WE DO

OGU focuses on practical field work and real environmental observation. Our work connects cleanup action with data recording, making every effort visible and meaningful.

Volunteer picking up plastic waste on Hong Kong beach during marine cleanup

Beach Cleanup

Removing waste from shorelines and coastal areas while documenting debris types and accumulation patterns.

Divers removing ghost nets underwater in Hong Kong seabed cleanup operation

Seabed Cleaning

Recovering submerged debris and ghost gear that cannot be seen from the surface but continues to impact marine ecosystems.

Data & Reporting

Turning field findings into structured records so observations can support awareness, research, and long-term monitoring.

Discover real impact from the field. Explore our data and ongoing cleanup efforts.

Why This Matters

Marine debris does not only appear on beaches. It accumulates underwater, becomes trapped in coastal habitats, and continues affecting marine life over time.

Many cleanup efforts remove waste — but the information behind what is found is often lost.

OGU believes that:

Cleanup should be documented
Findings should be shared
Data should remain accessible

So that every effort contributes to a clearer understanding of Hong Kong’s marine environment.

OUR APPROACH

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Abandoned ghost net tangled on rocky coastline covered with debris and seaweed

Observe

Record location, type of debris, and field conditions during each activity.

Remove

Carry out cleanup operations on beaches and underwater with safety and practical field management.

Publish findings through structured records and mapping to support transparency and future use.

MARINE DEBRIS MAP

OGU compiles findings from field activities into a growing record of marine debris across different locations.

This includes both shoreline and underwater observations.

Explore the Map

Submit a Finding

What the map shows:

Beach / shoreline debris
Underwater / seabed debris
Ghost gear and fishing-related waste
Cleaned vs observed locations

Purpose: To make environmental findings visible, trackable, and useful beyond individual events.

Group of volunteers collecting marine debris during coastal cleanup in Hong Kong

Collaboration & Support

OGU partners with organizations to carry out beach and seabed cleanups, while building environmental data. We also welcome donations to support our work.

Partner With Us

Volunteers cleaning marine debris on rocky coastline in Hong Kong

Citizen Science

OGU encourages responsible environmental observation through participation.

Citizen science, in our context, means:

Recording what is found in the field
Sharing real observations
Contributing to a growing public record

Not only cleaning, but also documenting.

This allows environmental information to remain visible and useful for awareness, research, and future action.

Submit a Finding

HOW YOU CAN PARTICIPATE

Join beach and seabed cleanups, report trash hotspots, and contribute to real environmental data.

Join

Participate in beach and seabed cleanup activities in real field conditions across HK.

Remove

Help collect marine debris, from shoreline waste to submerged ghost gear.

Report & Share

Log trash locations and upload findings to support open environmental data.

TAKE ACTION WITH OGU

Upcoming Cleanup Events

Join us in protecting Hong Kong’s coastlines and underwater environment. Choose an upcoming event and contact us through WhatsApp to participate.

Beach Cleanup Seabed Cleaning

Open to general volunteers. Help remove coastal waste while learning more about Hong Kong’s island environment.

17 MAY

BEACH CLEANUP 01

Ma Shi Chau Tombolo Coastal Cleanup

Sunday · 10:30 am–2:30 pm

Join Event

14 JUN

BEACH CLEANUP 02

Ma Shi Chau Tombolo Coastal Cleanup

Sunday · 10:30 am–2:30 pm

Join Event

28 JUN

BEACH CLEANUP 03

Yang Chau Coastal Cleanup

Sunday · 10:30 am–2:30 pm

Join Event

12 JUL

BEACH CLEANUP 04

Yang Chau Coastal Cleanup

Sunday · 10:30 am–2:30 pm

Join Event

26 JUL

BEACH CLEANUP 05

Yang Chau Coastal Cleanup

Sunday · 10:30 am–2:30 pm

Join Event

For qualified divers and designated surface-support volunteers. Diver certification and experience requirements may apply.

01 AUG

SEABED CLEANING 01