You'll know you're on the right train from Tokyo to the Izu Peninsula because you'll recognize the bags emblazoned with dive flags. Just about 70 miles south of Tokyo, the Izu Peninsula juts into the sea and is surrounded by diving. Deepwater upwellings support an interesting array of temperate creatures. You can wade in directly from the shore at the Izu Oceanic Marine Park or take short boat rides to a plethora of dive sites. Go during the week, because the local divers descend upon these sites during the weekend. And bring along, or stick close to, the guide to find elusive dragon moray eels, wildly colored pinecone fish, and cool critters like slipper lobster and tiger cowries. The seascape packs in the color, with vibrant soft corals and gorgonians with kingly purple polyps. Some hot spots not to miss are Osezaki, Yawatano, Futo Point and even the Marine Park. Be prepared for cooler water in winter, with temps that dip into the low 70s°F (from 80°F) in summer.

For information on all things underwater off Japan, check out www.divejapan.com**. To book your next dive vacation to Japan contact** www.opencoastravel.com