Kaien Ver. 2.0 — Raja Ampat
海園Ver.2.0 購入判断用映像
Behind-the-scenes footage from a Kaien Ver. 2.0 field test in Raja Ampat, Papua, Indonesia. The device's effect on a visible school of sharks and surrounding fish is shown in real conditions.
EVIDENCE · 実証 Watch the device
Watch the device
at work.
Eleven videos from the 海園チャンネル YouTube library, presented with dates, locations, species where known, and honest captions. Where a video shows something the device does not do, we say so. Where a video is a controlled comparison, we say that too. Every claim below is visible on screen.
SPECIES-SPECIFIC EVIDENCE · 種別試験
A controlled
A controlled
before-and-after
on a tiger shark.
イタチザメ（Galeocerdo cuvier）
The test was run with two devices. The first had a dead battery — physically present, electrically off. The shark was not deterred. The second device was powered. The same shark, the same conditions, only the electrical output changed.
This methodology is rare in the shark deterrent industry. Most competitor demonstrations show the device working in one condition, without a control. A same-subject before-and-after comparison is the strongest possible form of product evidence.
イタチザメの海園回避テスト
MASTER DEMONSTRATIONS · 総合検証
Two Sharks Repelled — Drone Footage
サメの海園回避行動1
Aerial drone footage showing two sharks approaching the Kaien device and turning away. The aerial perspective allows the deflection to be observed clearly above the waterline.
FIELD FOOTAGE · 現場映像
Offshore sportfishing aboard the 秀吉丸 (Hidekichi-maru) out of Abuzuri Port, Hayama, and coastal drone footage. Real conditions, real shark pressure, real outcomes — including days with no catch.
Three Tuna Landed Unharmed
Three tuna landed on lure, each brought aboard undamaged and with the Kaien device still attached.
Tuna Landed — Camera Bitten
Shark activity was high enough that the underwater camera itself was bitten. The tuna was still landed successfully with Kaien + ring.
Tuna Intact — Kaien Ring Visible
A healthy tuna comes aboard with the Kaien ring visible on the catch. The ring slides down the fishing line during landing — the most vulnerable phase.
Sharks Return When Device Is Removed
Sharks approach the device, break off, then return to the area when the device is removed. The video documents device effect on shark movement.
Feeding Frenzy Test — Chum Scatter
Chum scattered to trigger active feeding; device introduced into the activity. Sharks approaching the device visibly break off.
No Catch, Spectacular Water
No tuna landed on this trip. Included because the second-half underwater footage shows the density of marine life the device was operating in.
HONEST CONTEXT · 正直な一例
When the ring
When the ring
size was wrong.
失敗事例を公開する理由
This clip is published on the 海園チャンネル with full context. It stays on the evidence page for the same reason it was published there: honesty earns trust that marketing never can.
A tuna rose smoothly with the Kaien ring attached. As the fish made a final escape effort under shark pursuit, the ring slipped off because the selected diameter was too large. Without the device, the catch was lost.
The accompanying note on YouTube makes the context plain: when the Kaien ring is correctly sized and attached, the landing rate exceeds 75%. A next-generation programme is currently in testing, still undefeated in heavy-shark conditions, not yet in production.
リングサイズ選定ミスで海園リング抜けてしまった結果、、、。
SOURCE CHANNEL · 海園チャンネル
All videos on this page are from the 海園チャンネル YouTube library, published by 株式会社花園 directly. Visit the channel for the complete archive and for any clips not featured here.
View the 海園チャンネル on YouTube →