Category: Other invertebrates

The described species of animals are over one million. Of these, about 55 animals possess a backbone or vertebral column and are known as “Vertebrates”. The remaining animals which lack backbone or vertebral column are referred to as “Invertebrates”. As we have discussed about arthropods- the largest phylum among invertebrates, we will discuss the rest of the phyla here, viz. Protozoa, Porifera, Ctenophora, Platyhelminthes, Nematoda, Annelida, Mollusca, Echinodermata and Hemichordata. It has been confirmed by evolutionary studies that all the members of an individual phylum have been derived from a common ancestral type. Thus all these phyla display different patterns, each manifesting a characteristic, anatomical and functional integrity and common ancestry.

Blanket octopus 0

Blanket octopus

Blanket octopus A unique looking sea creature. As it’s not very big, it’s easy prey for others. So it uses a different way..when threatened they realize a silly blanket like membrem from it’s arms...

Sea Urchin 0

Sea Urchin

Sea Urchin Urchin is an old name for hedgehogs. So Sea urchins are the hedgehogs of the sea. Sea urchin is an Echinoderm and lives on the sea bed to a depth of 5000...

Mimic Octopus 0

Mimic Octopus

The Indonesian Mimic Octopus has a unique ability to turn virtually any color or pattern. It is naturally brown and spotted but has been seen in every hue from ghost white, as shown above,...

Salpa 0

Salp or salpa

Salp or salpa Not to be confused with jellyfish, salps are transparent, free-floating tunicates. Their gelatinous bodies swim by contracting and pumping water through internal feeding filters, feasting while they move.

Beautiful Glass Squid 1

Beautiful Glass Squid

Beautiful Glass Squid Common Name: Bathyscaphoid squid, cockatoo squid, cranchiid, cranch squid Scientific name: Cranchiidae Description: The googly-eyed glass squid (Teuthowenia pellucida is a blue, transparent organism with a body size of approximately 200 mm (7.9 in.) and...

Cone Snail 0

Cone Snail

Cone Snail Don’t fall for this innocuous, pretty-looking sea shell. The cone snail, along with its 400 genetic cousins, can inject you with a painful dose of venom through its harpoon. To make things...

Portuguese man o' war 0

Portuguese man o’ war

Portuguese man o’ war Portuguese man o’ war may look like a jelly fish, but actually it belongs to a different group called siphonophores, which are colonial Cnidarians. The name comes from the Man-of-War,...

Various type of Star fish 0

Sea Star

Common name: Red-knobbed starfish / red spiny starfish /african red star Scientific name: Protoreaster linckii

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