At Sembawang Park, I saw an uncle doing a most peculiar thing. He was sprinkling water along the sandy shores from a container which looked like it contained orange peels. Observing attentively at the spot were he sprayed, with a swift motion, he dug his fingers into the sand probably observing some movement. And wow..., out came a worm which he passed to his daughter, probably to be used as fishing bait later. Quite amazing, I wonder how the water soaked in orange skins lured the worms out...
For people who have a passion for fishing, please do not throw away unwanted lines and hooks anywhere. This may pose a potential danger to birds which can get entangled or cut by them. See the sad story of the heron killed by such in BESG blog.
It is hard to define the exact symbiotic relationship of this shrimp towards its host, although it is commonly describe as being commensal. It is known that P. brevicarpalis clip off and feeds on its hosts' tentacles, the Bubble anemone (Entacmaea quadricolor) for food and thus had even also been described as parasitic. However, it is also possible that it have beneficial behavior to its host, of helping to clean the anemone of ectoparasites and/or supplying nitrogenous waste products to its host as seen in other shrimps of the same genus.
To me, cockatoos are remarkable acrobats for their size, hanging at seemingly impossible angles to reach their food. Their beaks also seemed to act as a third limb, just like how some monkeys use their prehensile tails.
