Edithburgh Jetty

Edithburgh is South Australia's macro cathedral, five meters deep. By day the pylons drip with color and leafy seadragons patrol the seagrass margins; by night the sand switches on, and the jetty produces the region's celebrity lineup on demand: southern blue-ringed octopus flashing warnings, tasselled anglerfish shuffling on their fins, pajama squid buried to the eyeballs, and nudibranchs in absurd variety. Photographers cross the state for it and rarely leave disappointed. The diving itself asks nothing, no depth, no current on a fair day, just patience, a good torch, and restraint around animals that can kill you if handled.

اللحظة التي جئت من أجلها: Blue-ringed octopus and anglerfish at night, leafy seadragons, world-class temperate macro

التضاريس: Sand, seagrass, and debris beneath a working country jetty

نقطة الدخول: Steps lead off the jetty on the Yorke Peninsula's heel; conditions are best with westerly protection and a slack sea.

المخاطر: Blue-ringed octopus are deadly if handled; fishing line and night navigation are the other cautions.

الحفاظ على البيئة البحرية: Look, light, and leave: no handling of dragons, octopus, or anglerfish, however good the shot would be.