- B-17 (Wreck)
- B-24 (Wreck)
- Baía da Armação
- Baía da Guia
- Baba Reef
- Babbacombe Beach
- Babino
- Babuljasi
- Baby Beach
- Bachelor’s Beach (Beyond the Corals House Reef)
- Bachman's Beach
- Back Beach
- Back Door
- Bacong West
- Bacvica
- Badia de Tamariu
- Bahía de Garachico
- Bahadur Resort House Reef
- Bahia Alcalá
- Bahia de Puerto Lopez
- Bahia de Tijeretas
- Bahia del Pont de’n Gil
- Bahia Drake - Isla de la Plata
- Bahia Ensueño
- Bahia Gardner
- Bahia Lila
- Bahia Rocas Lindas
- Bahura Dive House Reef
- Bahura House Muck Dive
- Bai Nhau
- Bai Su
- Baia del Rogiolo
- Baia delle Tavine
- Baie de Ngor
- Baie Ternay Marine Park
- Bait Reef
- Baita al Lago
- Baix de Cols
- Baixa das Moreias - Clube Naval
- Baja Bocarones
- Baja de Arguineguín
- Baja Fría
- Bajón del Río
- Bajo Bonito
- Bajo Bonito (Plaza de Toros)
- Bajo Cope
- Bajo de Cerro Mundo
- Bajo de Cullero
- Bajo de Dentro
- Bajo de Emilio
- Bajo de Fuera
- Bajo de la Esponja
- Bajo de la Testa
- Bajo de la Torre
- Bajo de las Xelles
- Bajo de Piles I Marine Reserve
- Bajo de Piles II Marine Reserve
- Bajo de San Miguel
- Bajo del Diablo
- Bajo del Lladó North
- Bajo del Moli
- Bajo el Norte
- Bajo Gringo
- Bajo La Morra
- Bajos de Salmedina Y Burbujas
- Bajos Gaudel Chiribito
- Bakalang Jetty
- Balas Balas
- Balayang Kugtong
- Balcony
- Balcony
- Bald Rock
- Baleeira
- Baleine
- Bali
- Balicasag Island
- Balinghai
- Balingoan
- Balky Point
- Ballbuster 100 Feet
- Ballena
- Ball's Pyramid
- Balluta Bay/reef
- Balmoral Baths
- Balmorhea State Park
- Balsa Dianka
- Balun
- Bama Wall
- Banana Bay Racha Noi
- Banc des gorgones
- Banc des Licornes
- Banc des Pirogues
- Banco di Santa Croce
- Banco Dollabarat
- Banco Rosario
- Bangag
- Bangladesh (Wreck)
- Bangsak Wreck
- Banjole
- Bannerfish Bay
- Banners
- Ban's Artificial Reef
- Bantigi
- Bantigue, Malapascua
- Banzai
- Baong Penyu (Turtle's Head)
- Bar Beach
- Bar Beach South
- Bar Flats
- Barbakonac
- Barcadera Reef
- Barcazas, Bahía de Santa Marta
- Barco Chino
- Barco de las Morenas
- Barco del Arrroz
- Barco Hundido
- Barco Viejo
- Barcoquemao
- Bare Island East
- Bare Island West
- Barents Sea, Liinahamari
- Barge Reer
- Baron Gautsch (Wreck)
- Barracuda
- Barracuda Bommie
- Barracuda Lake
- Barracuda Point
- Barracuda Point
- Barracuda Reef
- Barracuda Reef
- Barracuda Reef
- Barracuda Rock
- Barragem de Varzea de Calde
- Barranco
- Barrel Sponge Wall
- Barren Island
- Barrens Hut
- Barrera Precolarina
- Barritas de Gairaca
- Barry's Place
- Bartolomé/cousin Rocks
- Basdio Sanctuary
- Base de plongée Port la Rague
- Bashful Bommie
- Basket Reef
- Bass & Flinders Point
- Bass Lake
- Bat Caves
- Batea Cabezos
- Bateas
- Batee Gla
- Batee Meuroron
- Batee Tokong
- Batelão
- Batéguier, Petit et Grand Tombants
- Bathala Thila
- Batu Belah
- Batu Belandra
- Batu Bolong
- Batu Bolong
- Batu Gosoh
- Batu Kelebit
- Batu Layar
- Batu Lima
- Batu Malang
- Batu Mandi
- Batu Nisan
- Batu Nisan Rock
- Batu Niti
- Batu Nunggul
- Batu Putih
- Batu Ringgit
- Bau de Cap Trencat
- Bau de la Ferrera
- Baumgarten Immensee
- Baumgärtli Immensee
- Bawe Reef
- Bay Camping Vestar
- Bay of Sunshine Cave
- Bay Watch
- Bayville Barge
- Bbc
- Beach 8Th Street F/k/a Almost Paradise
- Beacon Point
- Beadnell
- Bear Cove
- Bear's den
- Beaver Lake - Dive Park
- Bee Hive
- Beijing Golden Fish Spring
- Beijing Jellyfish Lake
- Belle Mare Passe
- Bellevue Quarry
- Bello Rincón
- Bell'ommo
- Ben's Blue Hole
- Bera D'coral
- Beras Laut
- Bergse Diepsluis
- Berlabuh
- Berlingen Wildsau
- Besmi Island
- Betty Blue
- Bettys Beach
- Beverly Hills
- Bezdan
- Bi village housereef
- Bianca C (Wreck)
- Biatabang
- Bibb Pond
- Bida Nog Island
- Bida Nok
- Bida Nok Bay
- Big Blue
- Big Broadhurst Reef
- Big Brother
- Big Brother East
- Big Brother South
- Big Coral
- Big Grotto
- Big Peninsula / Secret Beach
- Big Reef
- Big Reef/dalyan Reef
- Big Rock
- Big Rock
- Big Seal
- Big Wall
- Bigelow Hollow State Park
- Bigo
- Bikini
- Bikini Beach
- Bikini Bottom
- Bikini on 2 Mile
- Bili Bok
- Bill's Bumps
- Billinghurst Cave
- Bintang Reef, Pulau Seribu, Jakarta
- Biorock
- Biorock
- Biotops
- Biowreck
- Biquelli Wall
- Birchy Head Dive Site
- Birhen Point
- Bita-ug
- Bitter Springs
- Bjarnagjá
- Black Coral Point
- Black Coral Wall
- Black Forest - Grenada
- Black Jack Hole
- Black Jungle
- Black Ray Channel
- Black Rock
- Black Rock
- Black Rock
- Black Rock
- Black Rock
- Black Rock Beach
- Black Rock Drop Off
- Black Rocks
- Black Tip
- Black Water
- Blackadder
- Blackwall Reach
- Blairgowrie Pier
- Blair's Reef
- Blanck Eck
- Blausee
- Blenheim Beach
- Blenheim Bomber
- Blind Reef
- Blindsee
- Blizzard Ridge
- Blizzard Ridge Lighthouse Bay Ningaloo Reef
- Blocks
- Bloom Shallows
- Blousteen
- Blowhole
- Blue and White
- Blue Bay the Garden
- Blue Buoy
- Blue Cathedral
- Blue Cave
- Blue Cave Bay
- Blue Cave / Modra špilja
- Blue Channel
- Blue Chute
- Blue Coral Gili Gede
- Blue Corner
- Blue Corner
- Blue Diamond
- Blue Fish Point
- Blue Grotto
- Blue Haze
- Blue Heron Bridge
- Blue Hole
- Blue Hole
- Blue Hole
- Blue Hole
- Blue Hole
- Blue Hole
- Blue Hole and Remains of Azure Window
- Blue Hole, Dahab
- Blue Hole, Dwejra
- Blue Hole, Dwejra, Gozo
- Blue Holes
- Blue Lagoon
- Blue Lagoon
- Blue Lagoon
- Blue Lagoon
- Blue Lagoon, Clerke Reef
- Blue Magic
- Blue Maomao Arch
- Blue Maomao Arch
- Blue Moon
- Blue Ribbon House Reef
- Blue Room
- Blue Springs State Park
- Blue Tunnel Sarigerme
- Blue Wall
- Blue Water Park
- Blue Water Wreck
- Bluefish Bay
- Bluefish Point
- Bluelagoon
- Bluewater
- BOA (Secche di Tor Paterno
- Boava Faru
- Bobby
- Boboss Epave
- Boca de Esquinzo
- Boca do Inferno
- Boca Hulu
- Bocacangrejo
- Bocciaplatz
- Bodekull
- Bodrum
- Bodu Hohola
- Boga Wreck
- Bognor Rocks
- Bogo Marine Sanctuary
- Boiler Wreck Batticaloa
- Bollullo
- Bonawe Quarry
- Bonifacio Reef
- Bonito Gordo
- Booby Island
- Boogie Nights
- Boomers
- Boonsung Wreck
- Boreas
- Boris
- Borj Bolila
- Bossy’s Canyon
- Bosy's Canyon
- Bottle Bay
- Boulder Beach
- Boulders
- Boulders Beach
- Bouley Bay
- Bounty Bay
- Bounty Wreck
- Boutiliers Point
- Bouy Line
- Boya 4 - el Toro
- Boya 5 - el Toro
- Boya 6 - el Toro
- Boyinaboat
- Bracciano
- Brady's Corner / Meditation Wall
- Brain Cave (Cueva de Cerebros)
- Brain Coral
- Bramassa
- Branksome Chine Pipes
- Breakers Reef
- Breakwater / San Carlos Beach
- Brechtsee
- Breman Ship Wreck
- Brescou
- Brestova
- Brestova
- Brighton Pier
- Brioni (Wreck)
- Bristol Beaufighter
- British Loyalty Wreck
- Brixham Breakwater Beach
- Brizare Rock, Mahé
- Broadhurst Corals
- Broder
- Broken Ledge
- Bronco Billy
- Brothers
- Brougierpark Vitznau
- Broulee Island
- Browns Bay
- Brunswick
- Brusnik
- Btc (Baie Ternay Center)
- Bubba
- Bubbies' Bagpipes
- Bubble Cave
- Bubblecave
- Bubbles Cliff
- Buccaneer Molinere Bay (Wreck)
- Buceo Anilao House Reef
- Buchanan's Wall South Solitary Island
- Buddha Island
- Buddy's Break
- Buford Sink
- Bugtong Bato
- Bulakan
- Bulijong Reef
- Bulk Jetty
- Bull Shoals Lake
- Bullshark Site
- Bumbište
- Bunder 1, Pulau Seribu, Jakarta
- Bunder 2, Pulau Seribu, Jakarta
- Bungalow Bay, Racha Yai
- Buntzen Lake
- Bunutan
- Buoyancy World
- Buraco das Cabras
- Buraco do Inferno
- Buracona
- Bureki Thila
- Burgos
- Burns Point
- Burns Rocks / Seal Canyons
- Bushranger's Bay
- Busselton Underwater Observatory
- Bussloo - Schurinkshof
- Butcher's Bank
- Butterfish Bay
- Butterfly House
- Buyuk
- By-Pass Reef
- Büyükada Kurşun Burnu