When I switched from the pool to the sea and had to learn to swim all over again — An Essential Guide to Open Water Swimming

Paula Veloso
by Paula Veloso
1 year ago

I remember the first time I decided to be “adventurous” and trade the pool for the sea. I thought it was the same thing: strokes, kicks, breathing. Easy.

The minute I put my feet in the water, I realized I was completely wrong. The cold was unexpected, the waves seemed to have their own agenda to swallow me, and, worse, I couldn’t see anything! I lost my sense of distance, direction, and started to feel… a bit disoriented. Fortunately, after sharing my experience with friends, one of them gave me the tip that saved my training (and my sanity): for open water swimming, the right gear makes all the difference.

Over time, I learned that the secret is not just in technique, but in the right items to ensure your adventure at sea is safe and enjoyable.

Here are the 5 pieces of equipment that transformed me from a “near-shipwreck” into a confident open water swimmer:

1. Neoprene Suit (Wetsuit)

My first mistake was thinking my pool swimsuit would be enough. The wetsuit isn’t just for keeping warm; it offers extra buoyancy, which helps you maintain a more horizontal position and save energy. It’s your life vest disguised as a swimsuit, and a crucial item for colder waters.

2. Safety Buoy

This is my favorite item and the one that made me feel truly safe. The buoy, which attaches to your waist, has three crucial functions: 1) it makes you a visible reference for boats, jet skis, and the rescue team; 2) it serves as a support to rest if you get cramps or tired; and 3) it allows you to store small objects. Always choose fluorescent colors like orange, yellow, or pink.

3. Open Water Swimming Goggles

Say goodbye to pool goggles. For the sea, you need open water swimming goggles with larger lenses, which offer a wider field of vision. Models with mirrored or polarized lenses are perfect for dealing with sun glare and for seeing your references on the coast, like that big rock or that house on the cliff.

4. Fluorescent Silicone Cap

The silicone cap isn’t just for protecting your hair. Like the buoy, its main function is visibility. Black or white caps blend in with the bottom of the sea. Fluorescent caps, on the other hand, make you stand out and easily visible to anyone on the surface.

5. Emergency Whistle

It’s a small item, but it can save your life. The sound of a whistle travels much further than your voice, especially amidst the noise of waves or wind. Attach one to your suit or buoy to have an effective alarm signal in case of an emergency.

The adventure of swimming in open water is fantastic, and with the right gear, safety is no longer a concern.

Ready for your next challenge? Find your next triathlon or open water swimming race on RaceFinder.pt and turn every stroke into a step towards your first open water medal.

More from the blog

Musings on swimming, running and riding for everyday athletes.

Getting to Races Without a Car: How to Plan Bib Pickup, the Start and the Journey Home
7 Oct 2026

Getting to Races Without a Car: How to Plan Bib Pickup, the Start and the Journey Home

Travelling to a race without a car is often easier than it looks. Trains, buses, metros and local transport can take you surprisingly close to many events, especially in larger cities. The problem is that race guides usually stop at broad instructions: take the metro to this station, parking is available nearby, or the start […]

Read More
Lisbon Marathon and Half Marathon 2026: Start Times, Bib Collection, Transport and Pace Guide
6 Oct 2026

Lisbon Marathon and Half Marathon 2026: Start Times, Bib Collection, Transport and Pace Guide

The EDP Lisbon Marathon and Hyundai Half Marathon take place this weekend, on 10 and 11 October 2026. If you are racing, this guide brings together the most practical information you need: bib collection, start and finish locations, transport, race times, cut-offs, aid stations and the average pace required for different finish-time goals. EDP Lisbon […]

Read More
Elevation Gain vs Distance: How to Plan Your Effort in a Trail Race
2 Oct 2026

Elevation Gain vs Distance: How to Plan Your Effort in a Trail Race

A 15 km trail race is not necessarily easier than a 20 km trail race. That sounds obvious to experienced trail runners, but it is one of the biggest adjustments for runners moving from road racing to the trails. On the road, distance and pace usually tell you a large part of the story. In […]

Read More
How to Prepare Your Hydration for a Hot Race
1 Oct 2026

How to Prepare Your Hydration for a Hot Race

When race day is approaching, it can be tempting to check the weather forecast and decide your hydration strategy the night before. In reality, the most useful preparation starts much earlier. Running in hot conditions increases thermal stress and can increase fluid losses through sweat. But that does not mean every runner should follow the […]

Read More