Sharks
Silky Shark
Carcharhinus falciformis · Cartilaginous fish — family Carcharhinidae
Silkies are the open ocean's welcoming committee. Hang beneath a liveaboard at Daedalus or in Cuba's Jardines de la Reina and they appear from nowhere — slender, bronze-backed sharks with long tail lobes, carving smooth circles a fin's length away. Few species close distance so readily, and few wear their curiosity so plainly; a safety stop can turn into twenty minutes of orbiting escort. They are also among the most heavily fished sharks on Earth, hauled up in vast numbers on tuna longlines and purse seines, which makes the confident crowds at protected seamounts feel like dispatches from an older ocean.
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 |
|---|---|---|---|
| Cocos IslandCosta Rica | Resident — seen on most dives | 全年皆宜 | |
| Socorro & the RevillagigedosMexico | Resident — seen on most dives | 全年皆宜 | |
| Jardines de la ReinaCuba | Resident — seen on most dives | 全年皆宜 | |
| MalpeloColombia | Resident — seen on most dives | 全年皆宜 | |
| Brothers, Daedalus & St John'sEgypt | Seasonal — reliable in season | May–Oct |
最佳月份一览
深入了解
栖息地: Warm open ocean over deep water; gathers around seamounts, offshore reefs, drifting objects, and anchored boats
分布范围: Circumtropical — one of the most abundant large sharks of the world's warm offshore waters, from the Caribbean and Eastern Pacific to the Red Sea and central Pacific
习性: Fast, sleek, and inquisitive, named for the fine, smooth texture of its skin. Silkies materialize around boats and safety stops in open water, circling divers closely and persistently, especially toward dusk. Around baitballs they switch to quick, slashing runs.
食性: Schooling fish such as tuna and mackerel, plus squid; often follows baitballs and tuna schools
体型: 通常约 2.2 m; 记录深度可达 3.3 m (total length).
与它相处时的行为守则
Keep the group compact during drifting safety stops, avoid low-light surface swims where silkies are working bait, and never spearfish from a liveaboard mooring they patrol.
保育
Vulnerable and declining — silkies are the most common shark in the global fin trade and dominate tuna-fishery bycatch. CITES Appendix II listing now regulates international trade.
以此著称的已标注潜点
观看
来自官方渠道
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
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