Published on 21 April 2026

In the shallow waters of the Straits of Johor, scientists explore a delicate seagrass meadow for one of the ocean’s most enchanting animals.

On the first weekend of 2026, conservationists from Malaysia’s Save Our Seahorses (SOS) and Singapore Oceanarium set out for an expedition to Merambong Shoal, a quiet seagrass meadow in the Straits of Johor in between two nations.

Their mission: to seek out and monitor the seahorses that cling to life among the gently swaying seagrasses.

Seagrass meadows are more than just patches of underwater plants. They are bustling ecosystems, sheltering and supporting countless marine animals, while also being an excellent buffer against climate change by capturing carbon from the atmosphere. Seahorses play a quiet but important role in maintaining this ecosystem, yet the meadows are fragile. Pollution, coastal development, and changing seas are slowly eroding their safety and stability, threatening to drag many of its inhabitants down into decline.

Led by Dr. Adam Lim, the team continued SOS’s long-running tag-and-release project, carefully tracking the local seahorse population. Their recent study shows that the Spotted Seahorse (Hippocampus kuda) is under pressure here, with its numbers facing a massive decline. While there are some hints at the population’s recovery, the future remains murky.

Searching the Seagrass

Finding a seahorse is an exercise in patience.

The team waded through calf-deep mud, where plastic tangled in the grass and murky runoff clouded the waters. Scars from past coastal development reminded them of the pressures these small animals face.

Still, the search continued.

Seahorses are masters of disguise. Their curled tails wrap around blades of seagrass, swaying gently with the current, almost invisible to the human eye. Hours passed. And then, small, delicate, and alive, a breakthrough: three previously untagged seahorses were discovered, including one pregnant male.

The numbers were modest, but the meaning was profound.

Nature’s Most Unusual Fathers

Seahorses are among the ocean’s most remarkable inhabitants. Like all members of the Syngnathidae family, including pipefishes and seadragons, it is the males that carry and give birth to their young—a rare reproductive strategy in the animal kingdom.

Male seahorses brood fertilised eggs in a delicate pouch before releasing fully formed offspring—a role reversal both curious and extraordinary.

Yet these creatures are fragile. Poor swimmers, they rarely leave their homes. When seagrass disappears, so do they. Because of their close dependence on their habitat, seahorses act as sensitive indicators of ocean health to scientists.

Each seahorse was measured, tagged, and returned to its original spot. Over time, these tags help researchers monitor population trends and recovery. Every encounter adds a piece to the story of life in the meadow.

Beyond Borders

As the last seahorse disappeared into the gentle sway of the grass, the team paused to reflect.

The challenges faced by Merambong Shoal—habitat loss, pollution, and climate change, mirror pressures on marine ecosystems everywhere. Protecting these waters requires cooperation, curiosity, and a shared sense of responsibility that crosses borders.

In the Year of the Horse, Singapore Oceanarium continues to strengthen regional partnerships to support marine conservation across Southeast Asia.

Sometimes, progress begins not with grand gestures, but with something small. A single seahorse, swaying in the grass, reminding us of the fragile beauty that surrounds us, and the care it deserves.

We extend our gratitude to Dr. Adam Lim and the SOS team for the invitation to collaborate in the field and look forward to the growth of what will be a lasting and impactful partnership. 

Delve into the intriguing nature of seahorses

Discover the fascinating world of seahorses—join our Animal Spotlight: Seahorses programme for an up-close look at their feeding and care, and uncover the extraordinary adaptations of these delicate animals.