I was astonished to see that mussels and clams have formed dense beds over the entire shore at Kranji! This shore used to be sandy/muddy and full of anemones.
Large portions of the shore were covered by mussels that formed dense beds with their byssus threads (fibres that the clams produce to attach to hard surfaces).
Nest mussels that I've seen on other shores. These ones even build upwards like 'clam condos'! I also saw some Green mussels among them.
Mangrove horseshoe crabs in this area. Here's a video of a pair (the male getting a free ride on top of the female) in the surprisingly clear waters of Kranji today. At one point, the female was obviously trying to burrow into the ground, but the dense clam build up just made it so difficult that she gave up. Ywee Chieh and I saw two horseshoe crabs whose upper shell was completely covered in mussels! (My photos of it didn't come out well). We gently removed the mussels.
Jul 2012. The shore was then mostly muddy silty sand dotted with lots of tiny anemones.
snail-hitching anemones which were stuck on living snails of various kinds. Each tiny snail had one, two and more of these anemones!
Project Driftnet blog post.
Jul 2012, we also saw an abandoned net with about 80 horseshoe crabs trapped in it. It's so heartbreaking that people are not more responsible when fishing on our shores.
Horseshoe Crab Research and Rescue effort.