DiveTwin
Dive site

Monterey Breakwater

California, USA

Typical depth
12 m
Type
Freshwater
Level
Beginner
OPEN WATERADVANCEDSURFACE5101520SAFETY STOP · 3–6 mTYPICAL12 m

Notes

Kelp forest, sea lions, harbor seals.

Marine life

Macro
nudibranchs (rich diversity), decorator crab, hermit crab
Pelagics
jack mackerel
Whales & dolphins
California sea lion (resident colony), harbor seal (resident), sea otter (surface)
Reef fish
lingcod, rockfish, cabezon, painted greenling, kelp greenling, sculpins
Cephalopods
giant Pacific octopus, market squid (winter spawning runs), red octopus
Invertebrates
metridium anemone fields on the breakwater, sea stars, sunflower star (recovering), sea urchin, strawberry anemone

Site features

  • Shore Dive
  • Kelp Forest
  • Sea Lion Encounters
  • Breakwater Wall
  • Sheltered Entry
  • Beginner-Friendly
  • Training Site

When to dive

Best
year-round

Monterey Breakwater (San Carlos Beach) is the iconic Northern California shore dive — a sheltered cobble-and-sand entry alongside the Coast Guard breakwater giving access to a giant kelp forest, the breakwater wall (covered in metridium anemones), and a resident colony of California sea lions that often join divers. Year-round dive; viz peaks in autumn and winter (after the spring upwelling clears). Cold water — 7 mm semi-dry or drysuit; 5 mm hood and gloves standard.

Conditions & access

Visibility
5–15 m
Water temp
10–16 °C
Current
Mild
Access
Open access
Min cert
Open Water; cold-water/drysuit orientation recommended for non-locals

Location

36.6058° N, 121.8919° W

Sources

Curated from 1 source

Bring Monterey Breakwater into your dive plan.

Open the planner with this site preselected on the map.

Open the planner →