Sharks
Silvertip Shark
Carcharhinus albimarginatus · Cartilaginous fish, family Carcharhinidae
A silvertip's arrival changes the temperature of a dive. The shape reads at distance (heavier than a grey reef shark, every fin edged in white as if dipped in paint), and the approach is pure confidence, a straight line ending in a slow bank a meter or two away. They own the deep edges of remote reefs: Osprey's North Horn, the Burma Banks, the seamounts of the Revillagigedos. Encounters feel like an audience granted rather than a sighting achieved. Slow to mature and faithful to isolated sites, silvertips vanish quickly when longlines find their banks, so the remaining strongholds sit mostly inside marine parks and far from ports.
在哪里、什么时候能见到
"常驻"表示在该目的地潜水时大多数情况下都能遇见它们；"季节性"表示在所列月份内可靠出现；其他任何情况都是意外惊喜，而非计划中的保障。
| 目的地 | 可靠性 | 月份 | 备注 |
|---|---|---|---|
| Socorro & the RevillagigedosMexico | Resident: seen on most dives | 全年皆宜 | |
| Coral Sea & Osprey ReefAustralia | Resident: seen on most dives | 全年皆宜 | |
| Mergui ArchipelagoMyanmar | Seasonal: reliable in season | Nov–Apr | |
| RangiroaFrench Polynesia | Occasional | 全年皆宜 | |
| Kimbe BayPapua New Guinea | Occasional | 全年皆宜 |
最佳月份一览
深入了解
栖息地: Offshore banks, seamount flanks, and steep outer-reef drop-offs, typically deeper than its reef-shark relatives
分布范围: Patchy across the tropical Indo-Pacific and Eastern Pacific: East Africa, the Andaman Sea, Indonesia, Papua New Guinea, the Coral Sea, French Polynesia, and offshore Mexico and Colombia
习性: The boss of the drop-off. Silvertips carry themselves with a directness that greys and blacktips lack, approaching divers head-on for a close inspection pass before resuming patrol. Every fin wears a brilliant white margin, unmistakable when the animal banks in the blue.
食性: Reef and pelagic fish, including smaller sharks and rays; frequently dominant over other species at a carcass or feed
体型: 通常约 1.8 m; 记录深度可达 2.7 m (total length; a heavier, broader-shouldered build than the grey reef sharks it resembles).
与它相处时的行为守则
Meet the head-on approach calmly without retreating mid-pass, stay off the bait line at feeds, and keep gauges and hoses clipped tight: silvertips are known to test dangling objects.
保育
Assessed Vulnerable in 2020; isolated island populations show sharp declines wherever offshore fishing reaches, and recolonization between distant banks is slow.
以此著称的已标注潜点
高亮显示的潜点由编辑团队为该物种标注；数字为1990年以来潜点约5公里范围内的GBIF出现记录数。
观看
来自官方渠道
Wildlife of Monterey | New film in our auditorium
Live Aviary Cam | Monterey Bay Aquarium
Live Aviary Cam | Monterey Bay Aquarium
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