Nudibranchs
Learn about nudibranch anatomy, life cycles, behaviour, identification, habitats, food sources and the fascinating details that make these sea slugs such popular macro subjects.
MacroDivers.com
Discovering, photographing, identifying and learning about nudibranchs and other extraordinary marine life from the Coral Triangle and beyond.
About MacroDivers
Exploring the small wonders of the underwater world
MacroDivers is an underwater macro photography and diving education site created by Andrew Grundy, a PADI Master Instructor, and Di Syrett, a nudibranch super fan with a sharp eye for the tiny details most divers swim past.
The site is all about nudibranchs and the wider world of macro diving: what they are, how to identify them, where to see them, how to photograph them and how to become a better, safer and more thoughtful diver while doing it.
You will find practical guides on nudibranch behaviour, food sources, anatomy, life cycles and identification, alongside destination notes from macro-rich dive locations, TG-7 and strobe setup advice, macro photography techniques, buoyancy skills, camera awareness, responsible muck diving and diving safety.
MacroDivers will continue to grow. We are building towards a dedicated nudibranch database and plan to expand beyond nudibranchs into other fascinating macro creatures such as frogfish, shrimp, crabs, seahorses, pipefish, octopus and the many small animals that make slow diving so rewarding.
Explore the MacroDivers Academy
The Academy is the educational heart of MacroDivers.com. It brings together practical diving skills, underwater photography techniques, nudibranch education and marine life guides for divers who want to find, photograph, identify and protect the small wonders of the underwater world.
Visit the AcademyPhotography
Improve your underwater images with practical guidance on TG-7 settings, lighting, strobe use, composition, eye-level photography and responsible macro techniques.
Diving Skills
Become a better macro diver with guidance on buoyancy, trim, buddy awareness, air monitoring, fin control and protecting delicate muck diving habitats.
Marine Life
Discover frogfish, seahorses, shrimps, octopus, crabs, pipefish and other remarkable macro subjects found across the world's best dive destinations.
Destinations
Our journey so far
Travelled October 2025 With Blue Ocean Diving, part of their
world tour program
Mozambique
Part one of Critters and Kings trip to Indonesia November /
December 2025
Raja Ampat
Part two of Critters and Kings trip to Indonesia November /
December 2025
Ambon
Travelled January 2026 Solitude Acacia Resort
Anilao
Coming Autumn 2026
Lembeh Strait & Manado
Species Database
A future nudibranch identification resource
The first version starts as a curated gallery. Over time, Di’s nudibranch database can grow into searchable species pages with names, locations, behaviour notes, ID confidence and comparison images.
Planned fields
Common name, scientific name, animal group, location, depth, notes and identification confidence.
Underwater Photography Gear
My Camera Setup and Recommended Settings
A detailed guide to the camera equipment and settings I use for underwater macro photography, including the Olympus TG-7, Backscatter Mini Flash 2, and practical techniques for capturing nudibranchs, seahorses, frogfish, and other fascinating critters.
Olympus TG-7 Macro Photography Setup
Discover the exact settings, accessories, and techniques I use to get sharp, colourful macro photographs underwater.
View Full Camera GuideAbout Us
Andrew & Di
MacroDivers was created by Andrew Grundy and Di Syrett to share their passion for underwater macro photography, dive travel and marine life identification. After meeting on a Blue Ocean Diving trip to the Philippines in 2024, they began travelling together to photograph nudibranchs, seahorses, frogfish, shrimps, cephalopods and other small wonders of the underwater world, with a strong focus on the Coral Triangle and other tropical dive destinations.
Read our full story
Contact & Social
Follow the journey
For questions about diving, underwater photography, MacroDivers or future collaborations, contact us directly.
Andrew:
andrew@macrodivers.com
Di: di@macrodivers.com
Instagram:
@AGScuba
YouTube:
@AGScuba
Di: Instagram
@Nudibranch.divers
Created by Andrew Grundy and Di Syrett.