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These animals are covered with a protective outer shell so are names crustacean, meaning 'hard-shelled'. Crustaceans belong to the group of animals called arthropods, meaning 'joint-legged'.

Resource type: PosterLast updated: 06.06.2019

Why do dead fish float? how do fish that live on the bottom stay there and not float to the surface? How do fish move around in the water? These are all serious questions about fish survival and the ancient science of physics.

Resource type: PosterLast updated: 06.06.2019

The name cnidarians comes from the greek word 'cnidos', meaning stinging nettle. A key feature of these animals is the presence of 'nematocysts' or stinging cells, found mainly in the tentacles.

Resource type: PosterLast updated: 06.06.2019

For a species to survive, it must reproduce successfully and in the ocean, as on land, this is not always easy.

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In the ocean, as on land, communication happens between individuals and between species.

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With the existence of many predators in the environment, aquatic animals have developed an amazing variety of defence mechanisms.

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There are a number of finfish species found within Western Australia's nearshore environment - waters from the high tide mark, seawards to a depth of approximately 20 metres.

Resource type: PosterLast updated: 06.06.2019

Pelagic fish mostly live in the open ocean, although part of their lifecycle maybe spent in nearshore waters. Unlike demersal species such as pink snapper that live near the sea bed and coral trout that live around the reefs, pelagic fish can be found anywhere from the surface down to depths of more than 1,000 metres.

Resource type: PosterLast updated: 06.06.2019

There are approximately 500 shark species worldwide and more than 100 of these are found in Western Australian waters.

Resource type: PosterLast updated: 06.06.2019