Sea Gods Diatom Ten6 CX iSUP Review – The “Trippiest” Stable Board on the Water | 2025

Sea Gods Diatom Ten6 CX iSUP Review – Overview

The Diatom Ten6 CX blends Sea Gods’ lightweight and rigid CX construction with the stable shape with psychedelic floral mandala artwork and a great feature set. The Diatom Ten6 CX is plenty stiff and stable for paddling, fishing, sun salutations, or even catching the occasional wave. If you like to paddle with a pet or child, are a larger paddler, or just like to have extra room and stability on your all-around iSUP, you’re going to love the Sea Gods Diatom Ten6 CX.

—Sea Gods Diatom Ten6 CX iSUP Review – Ratings and Summary —

Sea Gods Diatom Ten6 CX iSUP Review – Construction and Durability

The Diatom Ten6 CX is made with Sea God’s Cross Weave (CX) Ultralight Fusion materials and processes. These newer materials help reduce board weight without sacrificing rigidity or durability.

Inside the Diatom CX is a drop stitch fabric core that gives the board its shape and rigidity. While this is true for all inflatable stand up paddleboards, not all drop stitch cores are the same. Sea Gods’ new CX construction uses a woven fabric material for the top and bottom base layers rather than a traditional knitted fabric. This reduces weight by using less material, but also reduces the amount the material can stretch when under a load. There are thousands of yarns stitched between the two layers of fabric that keep the two layers separated at the same distance throughout the board once inflated. Again Sea Gods has broken from the norm by using a crossing drop stitch pattern rather than the traditional V-stitch pattern. This again helps increase rigidity without adding additional weight.

The outer PVC shell of the Diatom is made of a thick, reinforced PVC tarpaulin that is fused directly to the inner core of the board. Fusion construction uses high heat and pressure to slightly melt the PVC material into the fabric layer and create a mechanical bond rather than relying on layers of glue to laminate the board together. Once the top and bottom layers are laminated and cut to shape, the edges of the board are brought together and sealed with a layer of PVC material that is heat-welded to the board. Welding the pvc fabric eliminates the use of glues that can soften and degrade over time.

An outer rail layer of PVC is applied all around the side of the board to protect the inner rail layer. Lastly two rail reinforcement strips, or pin lines, are adhered to the edges of the outer rail layer to protect the edges from impact and abrasion.

After the deck pad and all other on-board features are installed, the Diatom CX weighs in at just 19.4 lbs on our scale, and has a recommended maximum inflation pressure of 20 PSI.

With a lightweight construction there’s always a bit of a worry that the board’s rigidity may take a hit, even when built with higher-end materials. We put the Diatom CX to the test in our 170-pound static bend evaluation. Across a 7’ span, the Diatom CX bent just 1.15” when loaded with 170 pounds of weight at the standing area when inflated to 20 PSI. That is significantly more stiff than our current running average of 1.61”, and is essentially as stiff or stiffer than many, much heavier, iSUPs in its size range.

Measuring rigidity only gives us one view of board stiffness. The more important factor is how it feels on the water. While standing and paddling normally on the Diatom CX I couldn’t feel any noticeable flex in the board. It feels great under my feet. As I started bouncing on the board I did feel a mild-to-moderate amount of flex, but once I stopped it had a very short-lived rebound. The rebound did feel a little “tight” but not so much that I would call it bouncy. During sprint paddling I could feel a little bit of the flex, but it was very minimal.

Specifications

Sea Gods Diatom Ten6 CX iSUP Review – Features, Accessories, and Versatility

It can be hard to focus on the individual features of the Diatom Ten6 CX because it’s just so freaking awesome looking. But they are there! The Diatom CX is kitted out to be a fully-versatile all-around iSUP.

The Diatom Ten6 CX’s onboard features make it highly versatile. You can load up the front with cargo for a long day on the water, attach a fishing pole (or two), paddle with a pet or friend, stretch out for some yoga, and even try out some SUP surfing.

Included with the Diatom Ten6 CX iSUP is the Sea Gods carbon fiber paddle (more on that in a bit), a coiled ankle/calf leash, 9” touring-style fin with tool-less Kumano click inserts for easy installation, a double-chamber/triple action hand pump (not pictured), a lightweight, but durable, storage bag, and a comprehensive repair kit. The Bag has both a well-padded backpack harness and high-quality wheels for easy carrying wherever you go.

Sea Gods has gone all-in on their environmentally-friendly packaging. Everything is packaged in recyclable materials and the board is now wrapped in a 12’ long microfiber towel instead of plastic. This helps keep your board protected in the bag, acts as a landing mat when inflating/deflating, and of course can be used to help clean and dry the board (or you).

Sea Gods Diatom Ten6 CX iSUP Review – Paddle

The Sea Gods carbon fiber paddle is a great pairing for cruising along with the Diatom CX.

The Diatom CX comes with Sea Gods’ carbon fiber three piece paddle. The moderately large paddle blade with a teardrop shape is great for cruising along on the Diatom. With the larger blade shape you can easily propel yourself along with just a couple of paddle strokes. While the paddle shaft is carbon fiber, the blade is made of a reinforced nylon material that flexes in the water just enough to keep you comfortably paddling for long periods of time. I did notice that the blade was flexing significantly while speed testing the Diatom CX, however I don’t consider this to be a typical use for this board or paddle.

The carbon fiber paddle shaft is lightweight and also offers a moderate amount of stiffness. The handle section has a length scale on the front and an indexing groove on the back. The indexing groove helps you align the handle and blade properly.

I’m a big fan of the molded T-grip handle on this paddle. Molded handles are definitely a premium feature and not often seen on kit paddles. It’s very comfortable to hold, has plenty of room for your fingers, and offers a very secure grip without the need for rough textures.

Sea Gods Diatom Ten6 CX iSUP Review – Stability

The wide outline and rigid construction of the Diatom Ten6 CX provides excellent stability for newer paddlers, larger paddlers, paddling with passengers, or just cruising around.

At 34” wide the Diatom Ten6 CX is definitely made for stability. The width of the board is carried very far forward to an extremely wide (almost 23”) nose and a moderately wide tail. This particular shape does a great job of keeping the Diatom CX stable while standing and paddling on the board, and for carrying cargo or a passenger toward the front of the board.

The tapering of the tail to a near pin-tail shape does change things up as you move backward on the board, though. As you walk back to the tail you can feel how the stability changes with each step. With the diminished tail under water you can very easily spin the Diatom CX around for a quick pivot turn, but you do need to keep your wits about you as the lower volume can sometimes feel a little squirrely until you shift your weight back toward the middle of the board.

Once you are back to the typical standing area of the board, though, the Diatom CX becomes extremely stable once again. While rocking the board from side to side, even in the current of a river, I didn’t notice the board catching or twitching, but was very predictable and easy to recover and balance.

Overall the Diatom Ten6 CX has excellent stability that’s very suitable for beginner paddlers, larger paddlers, or those carrying some extra cargo or passengers.

Sea Gods Diatom Ten6 CX iSUP Review – Speed

While the Diatom Ten6 CX is very stable it does run into a few issues when trying to paddle at very high speeds. However it still feels great to paddle at cruising speeds and carries itself easily across the water.

While speed testing the Diatom CX I could tell that the board felt out of its element. This cruiser-style all-around isn’t meant for racing, and that’s OK. The rigid construction still held up well to fast paddling without causing the board to bend and flex, however the lower rocker profile and wide nose did cause the board to noticeably plow its way through the water at higher speeds.

In our top-speed and sprint testing the Diatom CX performed about how I expected it to. The average sprint speed hovered around 4.8 MPH while the peak speed I was able to reach was just 5.2 MPH. These results are a little bit slow for other 34” wide boards, however most of those are a foot longer, which can make a big difference in their maximum speeds. Another component of this slightly slower speed is the size and weight of the paddle. The Sea Gods paddle is great for lower-cadence cruising, but is much harder to use at a higher cadence.

Once I dialed things back to a more reasonable pace, the Diatom CX started performing much more comfortably. At a comfortable cruising pace of 25 strokes per minute the Diatom CX held an average 3.5 MPH and the feeling of pushing water was greatly reduced. The Diatom CX is also pretty efficient on the water. Between paddle strokes I was able to move just over 19 feet before feeling the board slow down, giving the Diatom CX a glide ratio of 1.8 board-lengths per stroke. That’s on the upper end of efficiency for all-around iSUPs, especially shorter and wider boards like the Diatom CX.

While I’m not going to pick the Diatom Ten6 CX for my next race, it still has plenty to offer for paddling efficiently at a cruising pace.

Sea Gods Diatom Ten6 CX iSUP Review – Maneuverability and Tracking

The Diatom Ten6 CX has a classic cruiser shape and vibe. It’s highly maneuverable (great for paddling around your local waters or catching a wave) but does struggle when it comes to tracking straight over longer distances.

Our maneuverability test is designed to stress paddle boards to really find the strengths and weaknesses of different boards. By testing using less-efficient turning techniques (forward sweep strokes) we can really easily see which boards are easier to turn and which are harder to turn. Someone forgot to give that message to the Diatom Ten6 CX, because it just crushed our maneuverability test like a Sumo wrestler squeezing a juice box.

With forward sweep strokes (arguably one of the slowest ways to turn your board) the Diatom CX whipped around in a full circle with just 4.75 strokes. While that’s under 90° per stroke on average, the reality was the first stroke got you well past 90°, you’ve done a complete U-turn before your second stroke is done, and that’s about the time when the fin begins to kick in and slows down your turn rate.

Reversing the test (with reverse sweep strokes) is even quicker and doesn’t even take 4 strokes to turn in a complete circle. Of course there are even faster methods of turning your board (like a pivot turn), but with maneuverability like this you hardly even need it!

In our 10-stroke tracking test we paddle toward a distant target then take 10 strokes on a single side of the board and measure the difference between the original target and the board’s new course using a sighting compass. The Diatom CX deviated off course an average of 23° in our testing. That’s a big improvement from last year’s 32° result.

Why is this? Sea Gods switched things up this year and included a 9” touring-style fin instead of a surf-style fin with the Diatom Ten6 CX. It’s crazy how much of a difference changing the fin can make.

The new fin really helped the Diatom with its tracking without greatly impacting its maneuverability (our forward sweep test only went from 4.5 to 4.75 strokes for a full circle turn). I think this is a big improvement and a great choice by Sea Gods.

While the Diatom did improve its tracking performance, it’s still on the maneuverable side of the scale. Long distance paddling isn’t this board’s forte. For that I’d check out the Skylla CX or Carta Marina CX depending on how far you are wanting to go.

Sea Gods Diatom Ten6 CX iSUP Review – Artwork

The Sea Gods Diatom Ten6 CX, like all of Sea Gods’ boards, gets a special limited-edition artwork with each new release. This year’s artwork is by designer Ira Markovka.

The Diatom has always had a wonderful mandala-focused artwork for as long as I’ve known it. Each year that artwork gets small tweaks and changes with each designer, but this year we’re getting the biggest shift from a traditional geometric pattern to a more organic, floral pattern.

And that organic feel isn’t limited to the printed artwork. There is also a new laser-etched design on the deck pad itself. The laser etching produces small cuts in the deck pad for contrast without creating large bumps or textures that leave marks on your skin when seated on the board.

Sea Gods Diatom Ten6 CX iSUP Review – Warranty and Customer Support

Sea Gods is one of the few paddle board companies that believes in their iSUPs so much that they offer a lifetime warranty against manufacturing defects. They also offer a repair service for non-manufacturing issues that may arise. Additionally, Sea Gods warranties all of their accessories for 1 year. This includes their paddles, pumps, fins, leashes, and more. Lastly, if you do decide that the Diatom Ten6 CX isn’t right for you, there is a 30-day return period, less shipping and a 10% restocking fee. If you do have any questions or concerns you can easily reach Sea Gods via their website, email, phone, or social media.

Sea Gods Diatom Ten6 CX iSUP Review – Final Thoughts

I really like the Sea Gods Diatom Ten6 CX. The design is breathtaking and the board is a blast to paddle. It’s a fantastic cruiser-style iSUP and is one of my go-to boards when I bring beginners on the water. The stable and agile performance is easy to get acquainted with, though it is sometimes hard to stop looking down at the artwork on the board! If you are looking for a fun-paddling, high-quality, buy-it-for-life iSUP that can easily double as a piece of art hanging on the wall behind your couch between paddle sessions, the Diatom Ten6 CX is right for you.

Sea Gods Diatom Ten6 CX iSUP Review – FAQ