Harry McCahill surfacing from a competition dive as judges show the white card

Constant Weight No Fins · Soufrière Bay, Dominica

Records &
results.

Every depth on this page is an official, judged competition dive. No estimates, no training numbers — only what was earned on the line and given the white card.

Photograph · Allie Reilly
63WORLD
Overall depth ranking
8th
In the world · CNF · 2025
3
British national records · CNF
91m
Deepest competition dive
I · Personal bests

Four disciplines.
One breath each.

Competition personal bests across all four depth disciplines, ratified and current as of the 2026 season. In Constant Weight No Fins — the purest discipline, no propulsion but the body — Harry is the deepest diver in British history but one.

CWT
91m
Constant Weight · with fins
FIM
90m
Free Immersion · pull on the line
CWTB
85m
Constant Weight · bi-fins
CNF
80m
Constant Weight · no fins
II · Records & honours

Earned on the line.

III · Season by season

A short career,
going deep.

Harry has competed in depth events only since 2024 — a rapid rise from first competition to world ranking and a World Championships place in three seasons.

2026
AIDA Individual Depth World Championships Limassol, Cyprus — qualified by wild card
World Champs
Personal bests deepened to 91 m CWT 91 m · FIM 90 m · CWTB 85 m · CNF 80 m
PB season
2025
Ranked 8th in the world — Constant Weight No Fins Top-ten global CNF placing over the season
World no.8 · CNF
British national record progression — CNF Successive national records on a single breath, no fins
National record
2024
First competition season Began competing in depth — Soufrière Bay, Dominica
Debut
First British national record — CNF Set the British no-fins mark in his debut year
National record

Official, dive-by-dive results are maintained on The Freedive Ranking and in the AIDA rankings database. Send me your latest results export and I'll fill in the full competition-by-competition table here.

Next on the line

Follow the descent.

Train with Harry in Dominica, partner with a rising GB athlete heading to the World Championships, or follow the season one dive at a time.

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