subtidal

Marine Conservation & Research
Monterey Bay Aquarium
MBARI
Monterey Bay National Marine Sanctuary
Hopkins Marine Station
UCSC’s Long Marine Lab
Moss Landing Marine Labs
Seafloor Mapping Lab - CSUMB

Magazines & Websites
California Diving News
Sport Diver
Scuba Diving
Underwater Times
X-Ray Magazine
Diving Northern California
Point Lobos Maps
Point Lobos Marine Reserve

Critters
Sea Slug Forum

Underwater Photography & Video
Cold Water Images
Metridium Fields
Northern California Underwater Photographic Society 
Monterey Shootout 
Wetpixel
Norbert Wu
Christopher Newbert
Liquid Lense
Dive Photo Guide

SCUBA Certification Agencies
PADI
NAUI
SDI
SSI
IANTD
YMCA
Handicapped SCUBA Association
CMAS
BSAC
Divers Alert Network