South African marathon swimmer Carina Bruwer has added another notch to her cap: a 17km open-water crossing from Durban to uMhlanga, completed on 26 October in four hours and 45 minutes. It wasn't a gentle day out — she battled strong currents, choppy seas and repeated jellyfish stings the whole way.

The route itself tells an interesting story. The original plan was to swim south, from uMhlanga to Durban, riding the south-flowing current. But forecasts of strong southerly winds forced a rethink, and the team flipped the course. Swimming north meant Bruwer swam against the current for much of the way, with conditions worsening as she went. That makes the finish time all the more impressive — and the swim fully observed and documented as an official crossing.

The swim was more than a personal feat. It formed part of GoReefers' See It All campaign, raising money for the South African Association for Marine Biological Research (SAAMBR), a Durban institution celebrating 75 years of marine research, conservation, animal rescue and education. Among its best-known work: rescuing and rehabilitating endangered sea turtles, and teaching young South Africans about the ocean.

The numbers so far are solid. Public donations had reached R48,000 at the time of the announcement, with more still coming in. GoReefers added R1,000 per kilometre — an extra R17,000 — and covered all operational costs, including the support boat and crew, so every rand donated by the public goes straight to SAAMBR.

For Bruwer, the cause is personal. Two decades of swimming in oceans around the world have given her a front-row view of why marine protection matters. She also hopes the crossing will inspire other swimmers to take on the Durban to uMhlanga route themselves — a stretch of KwaZulu-Natal coastline most people only ever see from the promenade.

Why should holidaymakers care? Durban and uMhlanga are among South Africa's most accessible coastal destinations, and this story puts a spotlight on the swim between them, on SAAMBR's work (worth a visit if you're in Durban), and on the idea that a holiday challenge can double as a fundraiser. The campaign remains open for anyone who wants to contribute. And if you're a confident open-water swimmer plotting your next goal, a documented 17km crossing between two beach towns — with warm-ish Indian Ocean water, at least in summer — is now firmly on the map.