From a refreshing dip on a hot summer’s day to snorkelling, diving and surfing, people around the world are drawn to the ocean. But lurking beneath the waves are lots of not-so-friendly sea-dwellers, ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world.

Tourists have been barred from entering the water along a seven-mile stretch of Spain's Costa Blanca due to the presence of rare, deadly sea creatures. This comes a year after a harbinger of doom fish ...

From water-jet snipers to exploding sea cucumbers, these creatures fire biological weapons with astonishing precision.