Multi-discipline martial arts school at 506 Nautilus St, La Jolla, CA 92037, between Draper Avenue and La Jolla Blvd near the Bird Rock border. Operating for over 20 years under head instructors Terry and Freddie King — Freddie is an 8th-degree black belt and former champion boxer — Twin Dragons teaches American Kenpo Karate, kickboxing, boxing, grappling, fencing, and mixed martial arts under one roof. The Nautilus Street location creates a martial arts corridor alongside Deep End Fitness at the nearby aquatic complex, giving combat and water-survival athletes two specialized training options within walking distance. Programs are split by age: children (5–12), teens, and adults, with structured belt progression that reviewers describe as rigorous and earned. The facility also sells martial arts equipment and supplies on-site. Shares the Nautilus Street block with SD Fight Academy at 504 Nautilus.