String Bikini

Q: Do the String Bikinis run large?

These string bikinis run slightly large and feature fully adjustable ties, allowing you to customize the fit to your body. 👉 If you’re between sizes or prefer a more secure feel, we recommend sizing down .

Designed for swimming, snorkeling, and long ocean days.

Adjustable String Bikinis That Let You Control the Fit

Finding a string bikini that actually stays in place underwater shouldn’t feel impossible.

Our sustainable string bikinis are designed specifically for ocean movement — whether you're scuba diving, snorkeling, surfing, or traveling somewhere warm. Each piece is made using recycled materials and designed to stay secure under your wetsuit without digging in, shifting, or needing constant adjustment.

Unlike fast-fashion swimwear that stretches out or fades after a few trips, these bikinis are built for repeat ocean use. Durable fabrics, adjustable fits, and timeless ocean-inspired prints mean you can pack lighter and dive more — without constantly replacing your swimwear.

Fully adjustable fit

Four stylized blue wave shapes on a white background

Designed for Ocean Movement

For lighter ocean days - not heavy gear or long dives.

Whale Shark Icon Swimwear inspired by whale sharks

Between sizes? Size down.

Frequently Asked Questions

Still deciding?

Do the String Bikinis run large?

These string bikinis run slightly large and feature fully adjustable ties, allowing you to customize the fit to your body.

👉 If you’re between sizes or prefer a more secure feel, we recommend sizing down.

How adjustable are the ties?

Each piece is fully adjustable at the neck, back, and hips, so you can fine-tune the fit for comfort, coverage, and movement. The long ties allow for styling multiple ways.

Does the string bikini stay secure in the water?

String bikinis offer flexibility and freedom of movement, making them suitable for swimming and snorkeling.

For high movement activities or wearing under a wetsuit, we recommend our Scuba Bikini styles instead.

How much coverage do the string bikinis provide?

Coverage is adjustable depending on how you tie the strings. These styles are designed for a lighter, more minimal feel compared to our Scuba Bikinis.

What if I’m unsure about sizing?

If you’re between sizes, prefer a snug fit, or plan to be active in the water, we recommend sizing down.

Still unsure? Contact us, we’re happy to help you find the right fit.

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.

Learn More

😊 love it

Fits under my wetsuit

Beautiful wish was a little longer to cover my stomach

Wonderful

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.

This bikini fits my girlfriend so well it's poetry:
Waves lap, splash her curves
Ocean Serene bikini
Happy Wet Woman!

I would strongly recommend this bikini as a gift to anyone hoping to convince their girlfriend to move to the Caribbean to live, work, and play by the sea. Not just because of the robust construction of the swimsuit, but because of the excellent customer service experience you're in for with Andrea/The Dive Compass.

I'm obsessed with this new print

I love the colors, pattern, and the fit of this bikini! 10/10

Such a cute design! The fit is perfectly!

Perfect bottoms for diving!

I’m obsessed with my whale shark bikini! 🐋💙 The fabric is so soft, the fit is amazing, and it gives the perfect amount of support. I felt incredibly cute and confident wearing it — it covers exactly where it needs to while still feeling sexy and cute. Perfect for diving or just a beach day ! It’s easily my new favorite bikini! 🌊✨ Lo amo!!!

I love this swimsuit! It’s great quality

Very nice design and material. For diving in warm waters or under the wetsuit - but it's too cute to hide it ;-) The size runs quite big, you could choose the smaller one.

I love the bikini top. It's so comfortable, top quality and the design is very cute. I wear it with a normal black bottom and it looks very nice together.

Love the quality and design! So unique and fits great.

Beautiful! The quality and unique design are just what I needed. I love diving and wanted a rash guard that was not the typical mass produced look. I bought this design and love it so much, I will be on the lookout for new styles from this company. Awesome quality and comfortable too! Love it!

My favorite purchase as the fit is good and the print is pretty!

Comfortable, loose fit and awesome prints.

Pretty print! I think these will fit well under a wet suit. Take your time to really measure yourselves before ordering!

Very pretty and good quality top! Don't have a photo yet as I've not gone diving with it, but soon!

This is my third diving bikini I've purchased from the dive compass and I can't get enough!

I absolutely love these Bikinis! I'm stocking up for my liveabord in Egypt!

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

This is a perfect rash guard!! Exactly what I was hoping for. It fit perfectly, is so well made and great quality material, protected me from the sun and sea critters, and looks so great!! Perfect for snorkeling or diving or any other water activity. Got tons of compliments and everyone kept asking me where I got it!! Was thrilled to tell them about this company, which donates 10% to ocean conservation! Will definitely be buying more!

Shop by Collection

Woman in a blue bikini sitting on a paddleboard with snorkeling gear, surrounded by water and sky, woman is wearing scuba diving swimsuit designed for divers, the best bikini for scuba diving

Scuba Bikini

Calix Roots cropped rashy coral print on a coral-colored rash guard, perfect for sun protection while snorkeling or diving.

Rash Guards

Leggings

Woman wearing an octopus bikini and octopus shorts while standing on a sandy beach with the ocean in the background.

Breezy Swim Shorts

Woman wearing an ocean blue swimsuit standing on a beach with ocean waves in the background

One Piece Swimsuits

Women wearing a sea turtle bikini standing next to a paddle board in a body of water. Adjustable string bikini to find your perfect fit.

String Bikinis

Woman is wearing a whale shark cropped rashie or crop top rash guard and scuba bikini bottoms in whale shark print.

Women's Collection

Man holding a surfboard on a beach, wearing an octopus rash guard and whale shark swim trunks.

Men's Collection

Corals planted with every purchase

Designed for divers with Sun Protection

Made from sustainable recycled fabrics, eco-friendly swimwear for scuba divers

Made to order = no excess waste

Easy returns, quality guaranteed