Life Under Foot
A sea robin searches for food along the sandy bottom at the Blue Heron Bridge.
If you think you need to scour the world in search of remote pinnacles, lonely outposts and uninhabited islands to find the best diving, think again. Some of the best diving spots on the planet are literally under your feet: Piers and jetties — man-made wonders of a practical nature — have transformed into thriving marine kingdoms. From Washington state’s Keystone Jetty and Florida’s Blue Heron Bridge to the Samarai Wharf of Papua New Guinea, these are seven of the most dynamic jetty dives in the world.