OSE Diving Center Kappa (branded on-site as "Diving Shop 海童 (Kaido) ～かっぱ (Kappa)～") is a shore/boat dive shop at Ose-zaki in Nishiura, Numazu, Shizuoka Prefecture — a well-known muck-diving point on the Izu Peninsula. The shop was founded in 2007-2008 by two guides (one a PADI Instructor, the other a NAUI Instructor) who had each previously guided at other long-running Ose-zaki dive operators. It offers guide packs for 1-3 beaches plus boat and night diving, PADI/NAUI-style step-up courses (Advanced, EFR, Rescue), a certification (C-card) course, equipment rental, and free pickup from Izu-Nagaoka station. Note: the assigned URL is an older, static page (site copyright notice reads 2008, with a 2014 renewal notice on the front page auto-redirecting to "海童.com"); a live, actively maintained WordPress site for the same business ("OSE DIVING CENTER 海童") was found at that successor domain, so prices/details below should be treated as this older page's content and re-checked against the current site before publishing as fresh.