Stève Stievenart, nicknamed "the Seal" ("le Phoque"), is a swimmer who specializes in extreme open-water swimming. His nickname comes from his build and his particular diet. To protect himself from the severe cold of the waters he faces, this resident of Wimereux (North of France) eats almost exclusively fatty fish, like seals [do]. https://podcasts.afp.com/afp-audio-sur-le-fil/202408112300-steve-le-phoque-lhomme-qui-dompte-les-mers-rediff

Triple Corona del Fin del Mundo (Triple Crown of the End of the World):

1. Cruce a Nado del Canal Beagle, 1.7 km between Chile and Uruguay in 53 minutes 24 seconds in 8°C water
2. Cruce a Nado del Estrecho de Magallanes, a 5 km crossing within Chilean waters in 1 hour 50 minutes 2 seconds on April 11th
3. Cruce a Nado del Río de la Plata, a 42 km crossing from Uruguay to Argentina in 17 hours 59 minutes 33 seconds on April 19th
   https://dailynewsofopenwaterswimming.com/steve-stievenart-is-first-to-achieve-triple-corona-del-fin-del-mundo/

Short vertical video in French here: https://www.franceinfo.fr/sports/sport-et-loisirs/steve-stievenart-devient-le-premier-nageur-a-boucler-la-triple-couronne-du-bout-du-monde_7950017.html