| Sea scorpions had strong defences - spines, claws and armour
plating. They walked on six legs, the back two of which were flattened
into paddles. Out of the water they were cumbersome but could swim a
little underwater. They were normally sea-floor dwellers but they
could also live in freshwater and on land. Megalograptus browsed the
seafloor looking for fish, trilobites and other animals in the sand and
mud. It also ate its own kind.
Megalograptus could only grow in size by shedding its hard shell and
growing a new one. While it was naked, it gathered with others in
shallow water for safety in numbers. During moulting, it took advantage
of its briefly soft body and abundant nearby neighbours to mate.
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