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Ocean Serenity One-Piece Swimsuit♻️

Sale price$70.00 USD

The One-Piece Swimsuit made for swimming, snorkeling, freediving, and boat days

Size:
One-Piece Swimsuit Size Guide
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Best fit for A–C cups. The full-coverage cut suits a wide range of bodies. The front is fully lined for coverage but has no built-in cups. Wear a swim bra underneath if you want more support.

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Measure yourself, not a garment you own. The one-piece swimsuit runs true to size. If you're between sizes, we recommend sizing up.

1

Measure Yourself

How to measure chest and bust

Chest / Bust

Tap to see how
How to measure waist

Waist

Tap to see how
How to measure hips

Hips

Tap to see how
Chest / Bust — Wrap the tape around the fullest part of your chest, keeping it parallel to the floor. Bring the tape under your armpits and across your shoulder blades. Don't pull too tight.
Waist — Find the narrowest part of your torso, usually just above your belly button. Stand naturally — don't hold your breath or pull in your stomach.
Hips — Stand with feet together. Wrap the tape around the fullest part of your hips and seat, parallel to the floor — usually about 8–9 inches below your natural waist.

🔍  Find My Size
Unit:
⬆️
Between sizes? The one-piece runs true to size — size up if between sizes for the most comfortable fit.
2

Find Your Size

Size Chest / Bust
inches / cm
Waist
inches / cm
Hips
inches / cm
XS 33⅛ in / 84 cm 25¼ in / 64 cm 35⅜ in / 90 cm
S 34⅝ in / 88 cm 26¾ in / 68 cm 37 in / 94 cm
M 36¼ in / 92 cm 28⅜ in / 72 cm 38⅝ in / 98 cm
L 39⅜ in / 100 cm 31½ in / 80 cm 41¾ in / 106 cm
XL 42½ in / 108 cm 34⅝ in / 88 cm 44⅞ in / 114 cm
2XL 45⅝ in / 116 cm 37¾ in / 96 cm 48 in / 122 cm
3XL 48⅞ in / 124 cm 41 in / 104 cm 51⅛ in / 130 cm

Measurements shown are body measurements, not garment measurements. Click any row to highlight your size.


Fit Tips for Diving

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True to size — size up if between

The one-piece swimsuit runs true to size. If your measurements fall exactly on a size boundary, that's your size. If you're between sizes, we recommend sizing up — a slightly roomier fit is more comfortable for a full day in and out of the water.
📐

Size to your chest

For a one-piece, prioritise your chest measurement first. The torso length and bust fit are the hardest to adjust — getting the chest right is the most important factor. If your hips suggest a different size, go with your chest.
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Stays put under your BCD

Our one-piece swimsuit is designed to stay in place through multiple dives. A one-piece is ideal for diving as there's no gap between top and bottom — no riding up, no shifting, no adjustment needed between dives.
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After your first dive

Recycled polyester softens slightly with saltwater and wear. If your one-piece feels snug at first, it will relax a little after the first few dives while maintaining its shape, support, and UPF 50+ protection.
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Which Measurement to Prioritise

If your chest, waist, and hip measurements suggest different sizes, prioritise your chest for a one-piece. The torso fit is set — there's no separate top and bottom to mix. When in doubt, go with the larger size for comfort and range of movement.

 

Still not sure about your size?

We're happy to help before you order — send us your measurements and we'll recommend the best fit.

 

 

Worldwide Shipping

Quality Guaranteed

Easy Returns & Exchanges

Made from plastic bottles (US production only)

UPF 50+ Sun Protection

Plants Corals x 3


🪸 Each swimsuit helps restore coral reefs

✔️ Full-coverage, secure fit that stays in place in the water while swimming, diving, or snorkeling

✔️ UPF 50+ sun protection (less sunscreen = happier reefs)

✔️ Double-layer front for support and confidence

✔️ No built-in pads — just a clean, natural, comfortable fit

✔️ Slightly cheeky cut for a flattering shape without feeling exposed

Not sure of your size?

Send me your measurements and what you’re diving in — I’ll tell you which to order.

Email me your measurements →

Ocean Serenity One-Piece Swimsuit – front view – scuba one piece swimsuit with UPF 50+ sun protection for divers
Ocean Serenity One-Piece Swimsuit♻️ Sale price$70.00 USD

Customers said this one-piece swimsuit is comfortable with nice, soft fabric. It works well as a base layer under dive skins. Some noted the shoulder straps sit farther apart than typical suits, which may affect fit for those with narrower shoulders. Overall rated positively for comfort and quality.

  • The suit is comfortable and the fabric is nice and soft.
  • 5 stars: 5 (71%)
  • 4 stars: 2 (29%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
S
Sandra H.

Fun design, comfortable fit

Hi Sandra! I'm so glad you love the fun design and comfortable fit of the Octopus Reef One-Piece Swimsuit. Thanks for sharing your experience!

E
Erica B.

It is a good full piece suit; I bought it wear under my dive skin. The shoulder straps are just a touch too far apart, or I am narrow shouldered. It’s not too bad, they just sit out further on my shoulders than other suits. The suit is comfortable and the fabric is nice and soft.

Hi Erica, thank you for sharing your experience! I'm glad you find the suit comfortable and soft. We'll keep your feedback about the shoulder straps in mind. Happy diving!

E
Erica B.

It is a good full piece suit; I bought it wear under my dive skin. The shoulder straps are just a touch too far apart, or I am narrow shouldered. It’s not too bad, they just sit out further on my shoulders than other suits. The suit is comfortable and the fabric is nice and soft.

J
Jessica
Can’t wait to get it in the ocean.

I got this suit after many disappointing suits. This one fits well, feels secure, and doesn’t have cups or squeezing fabric or any of that stuff you don’t want when you’re diving. Can’t wait to get it in the ocean. For fit, I am 5’2” and 180 lbs.

J
Jessica
This one fits well, feels secure

I got this suit after many disappointing suits. This one fits well, feels secure, and doesn’t have cups or squeezing fabric or any of that stuff you don’t want when you’re diving. Can’t wait to get it in the ocean. For fit, I am 5’2” and 180 lbs.

N
Nicolette
This suit is sooo soft and so cute!!

I am obsessed!!! This suit is sooo soft and so cute!!

M
Melissa
Super comfortable stretchy fabric

Super comfortable stretchy fabric, not at all see through, covers in all the right places, very flattering cut even for a middle-aged body. The pattern is even more gorgeous in person than in the photos. I’ll be buying more.

Coral reefs need our help!

Your purchase plants corals

Did you know that it is estimated that over 50% of coral reefs have been lost since the 1950s?

When we learned this heartbreaking statistic we knew we had to do something about it - so we created The Dive Compass, an ocean loving swimwear brand where YOUR purchase can actually make a difference. Each purchase plants corals in the heart of the Coral Triangle in Bali, Indonesia with the Livingseas Foundation.

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