
Surface Interval Ideas: Making the Most of Off-Gassing Time
The surface interval is not dead time. Plan your off-gas hours well - kayaking, cooking classes, island walks - and the whole trip improves.
Articles
Product knowledge, sourcing guides and news from the ZHONG JIAN team.

The surface interval is not dead time. Plan your off-gas hours well - kayaking, cooking classes, island walks - and the whole trip improves.

Turtles rebounding, sharks recovering, coral regrowing - ocean conservation works more often than the headlines suggest. Here is the evidence, and how divers contribute.

Baiting and chumming bring sharks close - but raise real questions. How responsible shark dives work and how to choose operators that get it right.

A birthday is a good excuse to finally book the dive trip. How to plan milestone dive holidays, from first-time certification to dream destinations.

Landlocked between trips? These diving films - dramas, documentaries and pure ocean spectacle - build the right mindset for your next dive.

Cold at home does not mean cold water abroad. Six short-haul winter diving destinations, plus the gear tweaks winter diving actually needs.

A house reef means diving from the shore of your resort. See why divers love them, how to get the most from one, and gear for shore entries.

Over 3,000 nudibranch species live in the world's oceans. Learn where to look, how to approach, and the macro gear that makes them photogenic.

Great whites are famous, feared and misunderstood. Here is the real story - adaptations, behavior, and how divers meet them ethically.

Mantis shrimp punch like a bullet and see colors we cannot. Learn how to find them, watch safely, and shoot them well.
Products
The models most often ordered with the gear discussed in our guides.

The SR full face snorkel mask delivers a wide panoramic view with a food grade silicone skirt and PC lens. The ABS frame and breathing tube keep it light - 420 g (XS), 430 g (S/M), 433 g (L/XL) - and every unit ships in a mesh bag.

The EKA full face snorkel mask offers the same easy-breathe full face design with a food grade silicone skirt and PC frame. Available in S/M and L/XL adult sizes at 690 g, it ships in a mesh bag ready for retail or rental programs.

The EK full face snorkel mask combines a food grade silicone skirt with a PC frame and breathing tube. Available in S/M and L/XL adult sizes at 690 g, packed in a mesh bag.