Bags of sand contaminated with oil at St. John's Island. Photo from the St John's Island Marine Lab facebook page. |
St. John's Island
The St. John's Island Marine Lab facebook page shared photos of oil slick floating on the Island's swimming lagoons (with a notice announcing the closure of the swimming lagoons), oil-slicked seawalls at the causeway joining St John's Island and Lazarus Island, as well as seawalls at Seringat-Kias.
Oil-slicked seawalls and shoreline Photo from the St John's Island Marine Lab facebook page. |
Pulau Semakau
The team split up with one group checking out the oil spill impact on Pulau Semakau. Pei Yan's blog post outlines the areas covered. Oil had washed up on the shore and the impact was assessed to be worst on the mangroves lining the shore (red line).
Mangrove roots and leaves were coated in oil up to the high water mark.
The large amounts of Sargassum seaweeds that washed ashore or were entangled in mangrove trees were soaked in oil.
Pei Yan shared this slide show of photos of oil slick impact on Pulau Semakau. But she also encountered lots of other marine life on this rich shore that appeared to be doing alright.
During this trip, a drone was also deployed to take aerial photos. Among the awesome photos is this one showing the oil spill impact on the high shore.
Kok Sheng's blog post showed his survey of Northern Semakau where he saw oil slick on the high shore and in some parts of the intertidal. On the whole the lower intertidal seemed alright and he saw clown anemonefishes, large anemones and the usual rich reef in the area. Special finds included a young Giant clam and his first encounter with a hard coral more often seen by divers.
Rich reefs at Northern Semakau appears alright, photo by Loh Kok Sheng on his blog. |
One of the many people seen with traps, nets and removing marine life at Pulau Semakau, by sgbeachbum. |
Terumbu Raya
At the same time, Russel Low was part of another team that checked out Terumbu Raya, a submerged reef next to Pulau Semakau. To our relief, all seems well there. In fact, the team there spotted three turtles surfacing, and a large Giant clam that we may not have seen on previous trips.
Rich reefs at Terumbu Raya seem alright. Photo by Russel Low on facebook. |
Kusu Island
Pei Yan and Kok Sheng and Chay Hoon shared what they saw at Kusu Island: the oil slick was concentrated on the high shore and at the highwater mark (on the seawalls), although there was slick on the intertidal too.
Oil spill impact on the Kusu Island swimming lagoon. Photo by Loh Kok Sheng shared on his blog. |
Oil slick next to living corals at Kusu Island. Photo by Heng Pei Yan on her blog. |
Metal structure dumped on living reefs of Kusu Island. Photo by Loh Kok Sheng shared on his blog. |
Some of the several discarded mattresses on the reef. Photo by Toh Chay Hoon on facebook. |
Large, delicate plate corals. Photo by Loh Kok Sheng shared on his blog. |
How much oil was spilled?
MPA media releases did not give quantities spilled in both the recent collisions. Two years ago, 5 metric tonnes of marine fuel oil was spilled on 4 Jan 2012. We didn't notice this level of slick impact during a survey shortly after the collision.
[Update: On 8 Feb MPA announced that the total spill for the two collisions was about 680 metric tonnes of fuel oil. The collision near Pulau Semakau spilled 280 tonnes of fuel oil while the collision near Kusu Island spilled 400 tonnes of fuel oil. By comparison, 2,500 tonnes was spilled in the massive 2010 oil spill]
Use of dispersants
It seems dispersants were used to deal with the oil slicks, as this photo provided in an MPA media release suggests.
from MPA media release 31 Jan 2014 |
Related links
- Media articles on the Jan 2014 oil spills including MPA media releases
- Portions Of Beaches At Kusu And St John Islands Affected By Oil Spill
- Oil spillage clean-up and containment efforts continue - Update 3
- Clean-up works on beaches of Kusu, St John's islands being completed: MPA
- Oil spill reaches Pulau Semakau by Heng Pei Yan
- Northern beauty of Semakau by Heng Pei Yan
- Oil spill check at Northern Semakau by Loh Kok Sheng
- semakau seagrass lagoon @ 01Feb2014 by sgbeachbum
Oil spill impact on Terumbu Raya
- Terumbu Raya - oil spill check by Russel Low on Singapore Reef Watch
Oil spill impact on Kusu Island
- Stress and more stress on Kusu Island by Loh Kok Sheng
- Kusu Reef: A reef with the lion city view under lots of stress by Heng Pei Yan
- Kusu Island Oiled by Heng Pei Yan
- Oil spill @ Kusu Island 31 Jan 2014 by Toh Chay Hoon on facebook
Oil spill impact on St John's Island
- Photos shared by the St. John's Island Marine Lab facebook page.
Other oil spill issues
- What can shore lovers do about an oil spill?
- Oil spills: Can it happen again?
- Oil spill dispersants do more harm than good
- What is the impact of dispersants?
- How fast does crude oil biodegrade?
- What long term effects of marine life?
- Other posts in this blog about oil spills