Sharks
Blue Shark
Prionace glauca · Cartilaginous fish, family Carcharhinidae
In good light no shark is more beautiful. Blues arrive from the down-current haze like animated brushstrokes: impossibly slim, fluid to the point of boneless, their backs a saturated ultramarine that gives the open Atlantic its most vivid wildlife encounter. Off the Azores in summer, snorkelers drift on the chum line while two or five blues loop among them for an hour at a time, close enough to study the huge dark eye and the crescent smile. The species pays brutally for its abundance: tens of millions die on longlines yearly, making the relaxed, curious animals at Condor Bank feel like ambassadors from a shrinking constituency.
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 |
|---|---|---|---|
| The AzoresPortugal | Seasonal: reliable in season | Jun–Oct | |
| Sea of Cortez & Cabo PulmoMexico | Occasional | Nov–Apr | |
| California Channel IslandsUnited States | Occasional | Jun–Sep |
最佳月份一览
| 月份 | 可靠目的地 |
|---|---|
| January | Sea of Cortez & Cabo Pulmo |
| February | Sea of Cortez & Cabo Pulmo |
| March | Sea of Cortez & Cabo Pulmo |
| April | Sea of Cortez & Cabo Pulmo |
| June | The Azores · California Channel Islands |
| July | The Azores · California Channel Islands |
| August | The Azores · California Channel Islands |
| September | The Azores · California Channel Islands |
| October | The Azores |
| November | Sea of Cortez & Cabo Pulmo |
| December | Sea of Cortez & Cabo Pulmo |
深入了解
栖息地: The open ocean's upper layers worldwide; comes within reach of divers where deep water presses close to islands and banks
分布范围: The widest range of any shark: temperate and tropical oceans globally, undertaking trans-Atlantic and trans-Pacific migrations
习性: Built like a glider, with long scythe pectorals and an indigo back that flashes cobalt in sunlight. Blues investigate anything floating, approaching snorkelers on baited trips with slow, elastic passes and gentle test-mouthing of fins and domes, insistent but rarely agitated.
食性: Squid above all, plus small schooling fish and carrion
体型: 通常约 2.5 m; 记录深度可达 3.8 m (total length).
与它相处时的行为守则
Wear full exposure suits on baited snorkels, keep shiny jewelry dry-side, move deliberately, and let crew manage the chum. The sharks track scent lanes and appreciate predictable people.
保育
Near Threatened globally and the single most heavily fished shark on Earth, dominating pelagic longline catches; management remains patchy across the high seas.
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
视频均为创作者自有频道的嵌入链接。我们不托管任何内容，所有来源均注明出处。