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Colorful coral reef scene with marine life in West Papua, Indonesia's underwater world.
📷 Tom Fisk · Pexels

Katrin reef

3.2 — based on 9 community signals
New spot

Katrin reef offers year-round diving in Indonesia with active community documentation and healthy coral systems worth exploring.

⭐ Best for beginners.

updated 4 months ago
Difficulty
Beginner
Shore entryFamily-friendlyBeginner

At a glance

Activity
dive
Difficulty
beginner
Best months
Year-round

Map

This spot Airport Nearby spots
Katrin reef location map © Google · Map data © Google, contributors
Open in Google Maps

Conditions today

Conditions

Open-Meteo
Wind
7.8 kn
Wave
0.3 m
Water
29.5°C
N E S W
Wind direction (7d)
Primary: ENE (16%)
Now: SE (138°)
Tide (7 days)
range: 1.08m

Next: Low at 01:00 (+0.46m)

+1.1 m0 m+0.0 m
▼ 01:00 · +0.46m ▲ 05:00 · +0.66m ▼ 12:00 · +0m ▲ 20:00 · +0.79m
Sat 19Sun 20Mon 21Tue 22Wed 23Thu 24Fri 25
UV9.05 · very high Air PM2.510 · good 05:44 17:50
Day Wind Wave UV Rain
09-19 14.7 0.4 9 0mm
09-20 9 0.3 9 0mm
09-21 12 0.2 9 0mm
09-22 9.8 0.26 9 1mm
09-23 7.1 0.26 8 3mm
09-24 6.3 0.26 9 2mm
09-25 6.7 0.16 9 1mm
⚠ Coral bleaching: Watch — favorable conditions
DHW: 0.5°C-weeks · NOAA Coral Reef Watch

About this spot

Katrin reef sits in Indonesian waters as an accessible dive destination open to exploration throughout the year. The reef maintains healthy coral conditions, though monitoring remains active as part of broader regional conservation awareness. With three community videos and documented species observations available, the site has attracted enough diver interest to build a modest resource library for planning your visit. The reef's year-round accessibility makes it flexible for trip planning. Whether you're timing around monsoon patterns or simply working with your calendar, Katrin reef remains diveable across all seasons. The community documentation suggests moderate traffic and established routes, meaning you'll find useful firsthand accounts from recent divers. This is a spot where local knowledge matters. Check those community videos before you go—they'll show you current conditions, entry points, and what species you're likely to encounter. The reef sits outside any marine protected area, so access is straightforward. Water conditions and specific depth ratings aren't heavily documented, so arriving with a local guide or experienced buddy is smart practice.

📖 Guide: Diving in Indonesia: 323 Sites, Mantas to Micro-critters

Best months

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Dive types

Reef

Trip essentials

Everything you need before you pack — checklist, sun, logistics.

Trip checklist

  • 🛂 Visa-free or visa-on-arrival
  • 📜 C-card + dive insurance (DAN)
  • 📔 Dive logbook
  • 🧴 Reef-safe sunscreen SPF 50+
  • 🔌 Plug type C/F · 230V adapter
  • 💊 Seasickness meds + ear drops
  • 📱 Offline maps + emergency contact

Quick facts

  • 🌓 Moon First quarter · 47%
  • GPS
Sustainability disclosures
🌍 CO2 footprint LHR ↔ 12201km · ~2806kg · €51

From your departure country

United States
Origin score: 54/100
  • Visa: Visa on arrival · 30 days max
  • Flight: 12h · direct
  • Jet-lag: 12h east · 8 days recovery

FAQ

When is the best time to dive Katrin reef?

Katrin reef is diveable year-round. Indonesia's seasonal patterns vary by region, so check local conditions and monsoon forecasts closer to your travel dates. Dry season (roughly May–September) typically offers calmer water, but the reef remains accessible throughout the year.

What depth and difficulty should I expect?

Specific depth and difficulty ratings aren't documented for Katrin reef. Watch the community videos and reach out to local dive operators before booking to confirm what's right for your training level and experience.

What marine life will I see?

Species observations have been recorded at Katrin reef, though details are limited. Community videos provide the best preview of what's currently active at the site. Expect typical Indonesian reef biodiversity, but confirm specifics with recent diver reports.

Do I need permits or certifications to dive here?

Katrin reef sits outside a marine protected area, so access is open. Standard dive certifications apply for any site. Always dive with a buddy or guide, and confirm current entry requirements with local operators before arrival.

Recently spotted by divers

iNaturalist →

Verified marine species observations

65 records · 49 species · sources: OBIS, GBIF

Conus glans

Gastropoda · Conidae
OBIS
Last seen:
4 Jan 2000
×2records

Thyca crystallina

Gastropoda · Eulimidae
OBIS
Last seen:
4 Jan 2000
×1records

Tectus pyramis

Gastropoda · Tegulidae
OBIS
Last seen:
4 Jan 2000
×1records

Conus miles

Gastropoda · Conidae
OBIS
Last seen:
4 Jan 2000
×1records

Fromia monilis

Asteroidea · Goniasteridae
OBIS
Last seen:
3 Jan 2000
×1records

Halgerda

Gastropoda · Discodorididae
OBIS
Last seen:
3 Jan 2000
×1records

Conus rattus

Gastropoda · Conidae
OBIS
Last seen:
3 Jan 2000
×1records

Barbatia amygdalumtostum

Bivalvia · Arcidae
OBIS
Last seen:
3 Jan 2000
×1records

Linckia multifora

Asteroidea · Ophidiasteridae
OBIS
Last seen:
2 Jan 2000
×2records

Cryptoplax

Polyplacophora · Cryptoplacidae
OBIS
Last seen:
2 Jan 2000
×1records

Ophiocoma erinaceus

Ophiuroidea · Ophiocomidae
OBIS
Last seen:
2 Jan 2000
×1records

Parasalenia gratiosa

Echinoidea · Parasaleniidae
OBIS
Last seen:
2 Jan 2000
×1records

Data: 187,991 observations from OBIS (Ocean Biodiversity Information System) and GBIF (Global Biodiversity Information Facility). CC-BY 4.0.

See this spot in action

YouTube videos — click to play.

Macro diving in Lembeh - Indonesia, August 2025 [4K|60fps]

kay blue
💬 3 top comments
  • OMG Baby Frog Fish!! 14:28. Unreal, so cute.

    @WDNCclubmember · 👍 0
  • Incredible UW macro videography...probably the best one on YT!

    @jonnieinbangkok · 👍 0
  • All these magnificent shots in 30 dives. WoW! I wanna go back to Lembeh...

    @bernardgiguere2752 · 👍 0

Diving Bali’s USAT Liberty Wreck: The ULTIMATE Guide (Snorkel + Scuba)

Aaron and Cassie
💬 2 top comments
  • Still 1 of my favourite ❤❤❤

    @catt138 · 👍 1
  • i thought about diving between Nusa Penida and Tulamben. These two are quite far away from each other. Logistic is an issue if you only have days. Plan early. The bump head parrotfish is resident of Sipadan.

    @Mansiang978 · 👍 1

30 Days in Diving & Sailing Paradise!

Back 2 Basics Adventures
💬 3 top comments
  • Better than National Geographic. I very much appreciate the in depth wildlife coverage. It's clear this took a lot of time & includes research as well as filming & editing & sincere efforts to preserve this delicate & fragile last paradise on earth.

    @bearrklia · 👍 6
  • That scuba edit was next level. Super fun writing.

    @bombadil776 · 👍 2
  • Wow, you upgraded your boat to a catamiran. Now your living the dream.

    @dgsean9775 · 👍 2
wind peaks Dec-Jan-Feb, calmest Jul-May-Jun.

5-year monthly climate

60 samples
0 5 10 15 20 25 JFMAMJJASOND
p25–p75 range Median Wind (kn) Air (°C)
Visibility (month-by-month)
Best: May (100/100) Worst: Jan (0/100) Now: Sep (94/100) NOAA MODIS Aqua · 5y mean

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