The seahorse has been known to us for thousands of years: the ancient Romans created beautiful mosaics celebrating their shape and grace. Yet a number of species escaped our attention until the 1970s – and then it took till the twenty first century to name six of the seven previously hidden kinds. Why did they elude us for so long? Firstly their size – they are tiny. Yet it is their amazing camouflage which really allowed them to remain concealed for so long.
