With their horse-like head, upright posture, locomotive dorsal fin, and prehensile tail, the seahorses (Hippocampus sp.) are some of the most peculiar fish in the sea (4) (5). Like all Hippocampus species, the skin of Jayakar’s seahorse is stretched over bony plates, visible as distinct rings on its trunk and tail (2) (5). The colour of its body ranges from pale cream to beige, but is often patterned with conspicuous white spots. In addition, long and sharp, dark-tipped spines protrude over much of its body (2).
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