One of the highlights was seeing the knobbly sea star (Protoreaster Nodosus). This is probably the biggest sea star in Singapore based on body width, as it can grow to about 30cm wide.
This sea star apparently feeds on micro-organisms on seagrass or sediment surfaces. However, it is known to feed on soft corals, sponges, clams etc. when in captivity. But they are not known to survive long in captivity, which suggest that the latter may not be their preferred natural diet.
This sea star apparently feeds on micro-organisms on seagrass or sediment surfaces. However, it is known to feed on soft corals, sponges, clams etc. when in captivity. But they are not known to survive long in captivity, which suggest that the latter may not be their preferred natural diet.
We also saw a cushion star (Culcita novaeguineae). They feed on corals.
We saw several species of sea stars too. The below are sand-sifting sea stars (Archaster typicus) in a shallow tidal pool, including one pair which is mating! 
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