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Giant Squid Giant Squid are among the world's largest molluscs (the longest recorded being approximately 13 metres), and heaviest invertebrates (up to half a tonne). Only the Colossal Squid is thought to be larger (14 metres).
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Cephalopods This entirely marine class includes such familiar animals as the octopus, cuttlefish and squid and also the so-called ‘living-fossil’ Nautilus and the extinct ammonites. As the name suggests the limbs are closely associated with the head, and in most cephalopods these limbs (arms and tentacles) possess numerous suckers which help to secure prey. Many species of squid, octopus and cuttlefish are of major commercial importance (primarily as seafood).
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Cuttlebone Cuttlebones are hard, ridged, shield-like objects that have a soft spongy inner layer and are frequently found on beaches, often in great clumps after storms. They are in fact the internal shells of cuttlefish, relatives of the octopus and squid. There are many species worldwide and several unique ones in Queensland’s waters.
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Ram’s Horn Squid or Tail-light Squid The Ram’s Horn Squid is a rarely seen deep-water species that has a light emitting organ at the tail-end of its body. The internal spirally-coiled shell, is composed of numerous gas-filled chambers that give the squid buoyancy. Tail-light Squids are cosmopolitan, occurring in all oceans.
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Blue-lined Octopus The Blue-lined Octopus grows to about 15 cm in armspan, but is often much smaller. It is easily recognised by the iridescent blue lines on the body and linked blue rings on the arms and webs, however this is a warning colouration and only obvious when the animal is aggravated. This species is only found from southern Queensland to southern NSW.
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Diamondback Squid The Diamondback Squid is instantly recognisable by its large size, bright red colouration and distinctive, angular shape (echoed in the specific name 'rhombus'). The main body can reach 1 metre and with tentacle length combined, the entire animal may be up to 2 metres in overall length. It is found Australia-wide but is sporadic.
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