Friday, 17 August 2012

Fish dissection practicle

Pulah Hantu

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Marina bay pier, litter, shoreline at high tide, ghost crab hole entrance, mangrove seed

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plastic bag, shells, goby and buddy shrimp cleaning out cave

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Horse shoe crabs

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shails and sea grass

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shy hermit crab:)

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catfish school, monkey, sponges, sea grass, monkey

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blue swimmer crab

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Flipping starfish and grumpy nudibranch

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Nudibranch, seed, crab again, mangrave tree

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seagrass, bivalve, seedling of mangrove

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Sea grass, cone shell, squids lol

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crabs and snapping shrimp (full grown)

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sand collar, cone shell

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more sand collar tape sea grass, seed, stuff that grows on sea grass, other stuff that  grows on sea grass

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elbow crab, fiddler crab holes, cone shell

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fllat worms, sea anemone, crab

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other random stuff

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corals and nudibranch

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same nudibranch

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feathery sea star and annother kite snake

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collection of stuff

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fireworm, leaves, ferry with bad lighting

Sungei Buloh

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monintors, birds nest

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trees

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bird and bats

Pulau Semakau

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sponges, anemone , hairy crabs

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corals and shells

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sponges, snails, shells, octopi

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shrimp, shell and seastar

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flatworm, seahorse and clam

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more corals and a nudibranch

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hairy crabs, sponges, marine spider

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sea cucumbers, crabs, crab holes

landfill facilities

Thursday, 16 August 2012

Mudskippers (Family Gobiidae)

Yellow spotted mudskipper on Kusu Island

Scientific classification
Kingdom:Animalia
Phylum:Chordata
Superclass:Osteichthyes
Class:Actinopterygii
Superorder:Acanthopterygii
Order:Perciformes
Suborder:Gobioidei
Family:Gobiidae
Subfamily:Oxudercinae
 Mudskippers are commonly seen on many of our shores. They are particularly abundant in mangroves and muddy shores, but are also seen on rocky shores and near reefs.Mudskippers are well adapted to the intertidal area. Being able to stay of water for a while gives mudskippers an advantage over 'normal' fishes. During low tide, they are among the few marine creatures that can exploit the dry muddy or sandy flats.While out of water, they breathe by retaining water in enlarged gill chambers.They can also breathe air through their wet skin. These fish are in fact more comfortable crawling around on the mud than submerged in water! They curl their muscular body sideways then push against the mud to spring forward.



Tuesday, 14 August 2012

Creeper snails (Family Certhiidae)

Scientific Classification

Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Family: Certhiidae

Creeper snails are commonly found on Singapore's shores, but often overlooked due to being well-camouflauged shells. They can be found on sandy shores, coral rubble and many coral reefs, and usually in groups or individually. They feed on algae and detritus of sea bottom, usually near reefs.

Creeper snails are small in length, around 2.5cm in length. They have narrow and long spiraled shell, with an upturned siphonal canal at the opening. The snail hides just beneath the sand, protecting the siphon. Horny materials, usually brown, makes the operculum of the shell.

Their tiny shell is usually used by young hermit crabs (once the snails die) as hermit crab's first home, as the shell would be hollow and just nice for new hermit crabs. Their shells have also been collected by hobbyists or for shell trade, as some of them may be rather attractive.
Some species of creeper snails, such as the Cerithium trailli, is listed "Endangered" on the red list of animals threatened of Singapore. The shores they used to be found has been lost from reclamation. Many creeper snails are in danger from being endangered due to human activities like reclamation and pollution. They have also been trampled on by careless visitors on shores, and extreme collection would reduce their numbers greatly too.

Top Shell ( family Trochidae)

They are shells of marine snails of the family Trochidae (subclass Prosobranchia, class Gastropoda), having a spiral, conical shell. They are found from the intertidal zone to the deep open seas, with greatest diversity in shallow waters along rocky shores of the equator to high latitudes. Tropical top shells tend to be larger and more colourful than from other regions such as the Atlantic shores or the Pacific. All species are herbivorous, feeding on algae or films of spores on rock surfaces. Males and females are in separate individuals, and fertilization is external, with most species having free-swimming larva.

The interiors of all top shells are nacreous (Definition of Nacreous: consisting of or resembling mother-of-pearl). This has made them popular among humans usage. For example, the largest species, Trochus niloticus, was once extensively fished for its lustrous mother-of-pearl layer, which was used in the manufacture of pearl buttons.