What's going on at Pasir Ris beach?

I had a short and relaxing break at a family-organised chalet in Aloha Loyang and thoroughly enjoyed the good food and company in my 2D1N stay there. As usual, I went on a very small scale exploration of the Pasir Ris breah coastline just outside the chalet area but was taken aback by the amount of trash and dead organisms on the beach.

Heavily littered coastline. I believe that most of the trash is derived from Pulau Ubin that is directly opposite..

More trash and P. Ubin in the distance

I am not very sure why there is just so many dead organisms here. Within a 50 metre stretch of sand, I have counted about 5 dead horseshoe crabs, 6 dead fishes, 2 dead crabs and likely to be many many more, since I wasn't paying attention to every detail. The Loyang Shipyard was close by and the pollution derived from it could be a possible reason.

Dead horseshoe crab

Dead filefish

Dead unidentified fish

Dead catfish?

Dead flower swimming crab

Dead swimming crab

More trash is seen during the lowest tide of about 80 cm

Durian husk. (hrmm)

Grey heron flew by. :)

Pair of Oriental Pied Hornbills in the distance..

Was mind-blowned by the trashy beach until I heard some squeaks and spotted a pod of Smooth-coated Otters swimming pretty fast along the coast. Most had fishes in their mouth and I wonder if those fishes are even healthy/fresh ones to begin with. :/

In short, this experience serves as a great reminder of the need to manage our waste properly and not throw them into the sea in an irresponsible manner... Gotta keep our beaches clean!! >_<