| The Participating Teams of 2025 | update: 03.09.2025 | ||||
| Men (mixed) | Women | ||||
| UWRC Wien (m) | AT | UWRC Wien (f) | AT | ||
| UNSW Whales | AU | Victoria Seadragons | AU | ||
| Orcas | CO | Helvetia | CH | ||
| TJ CZU TRITON | CZ | Orcas | CO | ||
| DUC Krefeld | DE | FS Duisburg | DE | ||
| Flipper | DK | Amager Uv-Rugby | DK | ||
| Osos | ES | Osos | ES | ||
| Paris Titans | FR | Frogs Bordeaux | FR | ||
| Ålesund | NO | BSI Boblen | NO | ||
| SDK Malmö Triton | SE | Black Mermaids | SE | ||
| Ege Üniversitesi | TR | Ege Üniversitesi | TR | ||
| NUWR Sea Lions | US | NJ Hammerheads (f) | US | ||
| USZ Zürich | CH | ||||