Recreation

Sells oxygen sensors for all types of rebreathers and O2 analyzers. They also sell an oxygen analyzer kit that includes the sensor.

Organization seeking to conserve ecosystems by enlisting the help of people to become citizen scientists. Provides a list of their programs, a database of results and a forum.

Hawaii's marine wildlife, dolphins, whales, sea turtles, monk seals, seabirds, and diverse fish species

Underwater imaging equipment.

Index of marine animals and information on ecology of the sea.

Visit East Timor's pristine coral reefs and meet their inhabitants.

Underwater photography from Okinawa, Japan.

Colorful photo galleries and regularly updated photo hints.

Professional photography and stock image agency specializing in underwater images. Includes information on galleries, submissions, and contact details.

Snowmobile and ATV forum with trail information.

List of snowmobile resources by category.

Promotes safe snowmobile use, the growth of the industry and provides statistics on registrations and sales.

Race coverage, trail guide, sled reviews and technical articles.

Frequently updated news from the snowmobile industry, fan photo gallery.

Dates, locations, and themes of upcoming meetings. Photos and reports from previous outings. Located in Ontario, Canada.

Longest-running cooperative collection of UE information on the Web. Information on sites from around the world, submitted by fellow explorers.

A forum dedicated to the art/ sport of urban exploration (urbex) and photography. For beginners and experts alike.

Discuss Urban legends and other haunted locations.

Although more academic than adventurous, this site offers a collection of maps, pictures and snippets of trivia useful to those seeking military leftovers in Germany.

Castles and ruins through the Hungarian history. Add the history when possible.

This group focuses on the parts of the island that people don't normally see. From derelict town houses to tumbledown greenhouses.

An site dedicated to urban exploration photography in Luxembourg and all around.

Historic buildings, monuments or artifacts. Pictures from England, Scotland, Wales, Northern Ireland and Eire.

Urban explorer, gravewalker, street photographer, miniature painter and traveler.

This is a public group for pictures of bridges or tunnels.

Photos of houses, factories, buildings that are about to be burned or torn down.

Pictures of damaged items and places.

Sharing photos of old, condemned homes and buildings.

Not just abandoned, this group is for things that seem to simply have been forgotten: old cemeteries, rusty cars, swingsets. Non-living things only. These are the things you know will still be there, unattended, if you drive by 10 years from now.

In post-industrial environments, there are many reminders, echoes, hints or ghosts of our industrial past.

Group to share photos of old churches.

Pictures of old houses 90, 100 years old or older.

Not houses that are falling down, but old houses that can be remodeled and preserved. Old historic houses.

Online galleries from Kim J. Köster.

This group is intended to contain images that show decay in an aesthetic way.

Pictures taken in strange places, places pictures should not be taken.

It's an eerie phenomenon, but there always seem to be an odd chair or something of that genre in abandonments. Only post chairs, sofas, benches and the such found in abandoned, desolate locations.

All kinds of factories: derelict or full of life, new or old, large or small.

Shops, stores, restaurants, cafes, retail and public buildings, that have ceased business and are falling into a state of decay and rot.

Photos of abandoned houses, buildings and ruins.

Rusted objects and places. Anything derelict, with a good coat of rust.

Pictures of abandoned retail facilities, inside and out.

Sharing photographs from explorations around the world.

Abandoned and closed down hotels.

Supermarket trolleys (or carts) have a tendency to show up in the strangest of places.

Everything you find under a bridge: graffiti, people, water, trash, traffic as long as it's under a bridge.

Photographically deconstructing the urban environment. Underground tunnels, derelict industrial sites and urban ruins.

Brett Patman's unique photos of abandoned and neglected buildings.

Troy Paiva's collection of night photography of the abandoned roadside west.

Vadim Makhorov and Vitaliy Raskalov. scale buildings, bridges, and industrial structures with no safety equipment, and take photographs.