Intertidal – CJ


THE EARLY DAYS – A serendipitious discovery and a sudden interest in nature
Early images before Chek jawa was saved (when all seemed lost)

Suddenly, nature at our very own backyard. Remnants of a hull of a boat (of the boat people who set their boat on fire when they landed at CJ).

The crowd was mobilised and volunteers educated the public on what was at stake.

The Iconic Chek Jawa beacon. Judy and Jessica found nature in the mass of sea weed.


Carpet anemone and sea grapes

Peacock Anemones

“Fully booked” is what that is routinely seen the NParks web-based site when one tries to register for public walks at Chek Jawa (CJ). Whenever the dates for public visit are being released, the slots are immediately snapped up, leaving many figuring how to beat the rest to the ritual of priority booking. Some have resorted to logging in daily so as not to miss the chance.

Due to the accessible tidal times members of the public saw bits and pieces of the richness of CJ but generally they were overwhelmed! Visitors who visited Chek Jawa can only gawk and marvel for there is so much to see and admire even when the guided walks lasted about an hour and the half. And they could walk way beyond the shoreline, treading comfortably on firm sand; something they thought impossible as in most inter-tidal areas. By now, visitors would have noticed that the metal beacon at the coral rubble is the landmark of CJ, the Knobbly Sea Star – the icon and the wild boar – the mascot. Amidst the din of vehicles, Priscilla, the wild boar will trot to the beach at least hoping for hand-outs.

To minimize the wanton destruction due to impact of human stomping on the sand and mudflats, NParks introduced a system of public guiding on designated routes marked by poles and manned by volunteer guides. In addition to the adult guides, secondary school students were also trained to be guides in a programme run by the Raffles Museum of Biodiversity Research (NUS), the South-east CDC and NParks. With the planned boardwalks and restoration of the British bungalow as a visitors centre the additions will enhance the visitors’ visits.

Some schools took the opportunity to send their students to CJ for the interactive outdoor classroom experience. Undergraduates from NUS also spent time learning about the biodiversity of the site with “live”samples. To study the effect of human activity on carpet anemones, researchers could not have chosen a better site in CJ for these anemones are widely scattered over the sandflats and are often trampled upon.

Despite completing the book on CJ, I found myself further drawn to the mystically world of the intertidal areas at low spring tide. The visits during the wee hours of the morning had been worth it.

And in the race against the changing tides, documentation is often adrenaline–charged and frenzied. For I have tuned my mindset to expect the unexpected. And invariably something new does crop up – like the endangered Bailer snail, the Sea Robin, Moray Eel, spider crabs and an aquatic File snake. It is comforting to know that more lies hidden in the sand and mud.

And nocturnal visits are a revelation, for many organisms seek the security of darkness to predate or feed. Under the glare of the torch-lights, the long, groping tentacles of Brittle Stars are rapidly retracted into the crevices. To see the huge Noble Volute laying egg capsules, the octopus walking on land, the cuttlefish changing its colours, the tiny porcelain crabs peeping out of the secondary polyps of the Sea Pens, the erratic jump of the Gong Gong snail, the rapid intrusion of tubeworms and the Sea Apple ejecting water spontaneously – one can not help but reflect on the miracle of life.

Sea pen, Tripod fish and Hermit crab

I was surprised to note that there might be a seasonal explanation to some of the organisms found on CJ. At certain times some nudibranchs were seen in numbers and at other times – none at all. The profusion of quilt pen-like feathery Sea Pens near the muddier areas was a highlight one morning. The sudden disappearance of some of flora and fauna had me wondering whether there was indeed a result of the impact of visitors stomping at CJ instead of the seasonal nature.

It was disturbing news when slash wounds were noticed on Priscilla’s rear end (The New Paper June 9 2003). For those who had the chance to view this docile mammal (she was brought up by residents of CJ but was released when the residents had to leave) the act was one of contempt. To see the long stretches of drift-nets and fish cages placed with impunity at CJ, one can not help but wonder whether all the efforts at conservation had been in vain. There is also a downside when visitors trample all over the site. Some carpet anemones along the guiding routes have already disappeared. The colourful sponges that were once widely scattered at the coral rubble area had also disappeared. Low tides below 0.5m at CJ are far too few in between and hopefully there might be a chance of recovery during the other times.

Moral eel, Sea hare, nudibranch

Volutes and Sea Horse

Revealed here are some of the creatures that were lesser seen and some are rare and endangered and each have a story to tell. I hope these images will provide the visitors the opportunity to see beyond the guided walks. The discovery of CJ has also made Singaporeans realize that there is more than meets the eye. Little pockets of nature, if retained, can stimulate understanding and respect for life and evoke emotions of bonding with the country. Visit Chek Jawa if you have not already done so. Each visit is an occasion to celebrate the spectacle and miracle of life.

File snake, mating crabs and sea cucumber