10 Aug '12, 5am

The Tide Chaser: Ribbon Worms (Phylum Nemertea) of Singapore

The Tide Chaser: Ribbon Worms (Phylum Nemertea) of Singapore

Ribbon Worms (phylum Nemertea) are soft-bodied, bilaterally symmetrical animals that are mostly long, thin and flat (like a ribbon). Some species, however, have short and wide bodies. They have an eversible proboscis (with either a sticky tip or tipped with a venomous stylet) which can shoot out just above the mouth to capture/retrieve their food. Carnivorous species are usually venomous, and use their venom to knock out or even kill their prey, which could be animals smaller or even as big as themselves. Others may be filter feeders, feeding on plankton. Ribbon worms respire through their skins. A number of species are known to be poisonous and some can even secrete toxins to deter predators. Most species (except the freshwater species) have separate sexes, and can reproduce sexually. Fertilisation is done externally - some broadcast their eggs and sperms into surrounding...

Full article: http://tidechaser.blogspot.com/2012/08/ribbon-worms-nemer...

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The Tide Chaser: Annelid Worms (Phylum Annelida) of Singapore

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tidechaser.blogspot.com 10 Aug '12, 5am

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tidechaser.blogspot.com 02 Aug '12, 4am

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