Cephalopods
Common Reef (Day) Octopus
Octopus cyanea · Cephalopod mollusk — family Octopodidae; the big day-active octopus of Indo-Pacific reefs, called he'e in Hawaii
This is the octopus most tropical divers actually meet, because it breaks the family rule and hunts by day. A big day octopus flows across the reef as a self-editing special effect — skin texture spiking into algae tufts, color rippling from mottled brown to bone white in under a second, a passing-wave pattern flickering as it moves. Watch a hunt: the animal balloons its web over a coral head and flushes whatever bolts, while jacks or a grouper often shadow it to pick off escapees, one of the reef's neatest hunting partnerships. Dens are readable by the midden of emptied crab shells at the door. Sit still three meters out and curiosity frequently wins, an arm tip arriving to inspect a strobe arm. Let it explore; snatching gear back teaches the animal that divers end hunts.
어디서 언제 볼 수 있나
"상주종"은 해당 다이빙 포인트에서 대부분의 다이빙 시 만날 수 있다는 의미이며, "계절종"은 표기된 월에 안정적으로 출현한다는 뜻입니다. 그 외의 생물은 보너스로 여기세요 — 계획의 근거로 삼지 마세요.
| 목적지 | 신뢰도 | 월 | 참고 사항 |
|---|---|---|---|
| Sharm El Sheikh & Ras MohammedEgypt | Resident — seen on most dives | 연중 가능 | |
| North & South Malé AtollsMaldives | Resident — seen on most dives | 연중 가능 | |
| Sipadan & MabulMalaysia | Resident — seen on most dives | 연중 가능 | |
| Kona, HawaiʻiUnited States | Resident — seen on most dives | 연중 가능 | |
| MoalboalPhilippines | Resident — seen on most dives | 연중 가능 | |
| Zanzibar & MnembaTanzania | Resident — seen on most dives | 연중 가능 |
한눈에 보는 최적의 달
이해하기
서식지: Coral reef and reef flat, denning in holes marked by middens of emptied crab shells.
범위: Indo-Pacific and Red Sea, from East Africa to Hawaii and French Polynesia.
행동 특성: Hunts by day — rare among octopuses — flowing between coral heads and ballooning its web over them; jacks and groupers often shadow the hunt to pick off escapees.
먹이: Crabs above all, plus shrimp, mollusks, and small fishes trapped under the flared web.
크기: 보통 0.6 m; 최대 기록 수심 1.0 m (arm-span; mantle to about 16 cm, large animals several kilograms).
이 생물 주변에서의 행동 요령
Settle a few meters out and hold still; curiosity often brings an arm tip to you. Never grab, pry at a den, or block the animal's line of retreat.
보존
Least Concern and fast-growing, though heavily fished for food across much of its range; healthy reef populations rebound quickly.
관련 다이브 사이트 목록
시청하기
공식 채널에서 제공
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
영상은 제작자의 채널로 연결되는 임베드 링크입니다 — 당사는 아무것도 직접 호스팅하지 않으며, 모든 출처를 표기합니다.