Sharks
Grey Nurse Shark
Carcharias taurus · Cartilaginous fish — family Odontaspididae
Australia's grey nurse is the same ragged-toothed species divers meet on North Carolina wrecks and Aliwal's caves, but its story here is distinct and cautionary. Labeled a killer on looks alone, it was speared toward oblivion by the 1970s before becoming one of the world's first protected sharks. Today small aggregations still trace slow ovals through gutters at a handful of east-coast sites, gliding among divers with prehistoric calm. The listed destinations in this atlas brush only the edges of its range — the celebrated aggregation reefs lie along the New South Wales and southern Queensland coast — so treat any sighting elsewhere in Australia as a bonus, not a plan.
どこで・いつ見られるか
「常駐（Resident）」とは、そのダイビングスポットでのほとんどのダイブで遭遇できることを意味します。「季節限定（Seasonal）」とは、記載された月に確実に見られることを意味します。それ以外の出会いはボーナスであり、計画の前提にはなりません。
この種について信頼できる目撃情報をまだ確認できていません。推測で掲載するより、情報が揃うまで空欄のままにしています。
理解を深める
ハビタット: Sandy gutters, bommies, and cave mouths along rocky reefs of the Australian coast; the same air-gulping hover as its overseas populations
分布域: Australian name for the sand tiger shark, Carcharias taurus. Two Australian populations: a small east-coast population from southern Queensland through New South Wales, and a distinct, poorly known west-coast population
生態・行動: Days are spent circling slowly in traditional gutters and around pinnacles in loose aggregations, mouths bristling, bodies nearly still in the surge. Individuals return to the same handful of sites for years, which concentrates both divers and risk in the same places.
食性: Reef and pelagic fish, rays, and small sharks, taken mostly at night
サイズ: 目安は 2.5 m; 確認済みの最大記録 3.2 m (total length).
出会ったときの正しいふるまい方
Australian critical-habitat rules are specific: no blocking gutters or cave entrances, no chasing or touching, approach along the side rather than head-on, keep group sizes modest, and no scooters or feeding at aggregation sites.
保全
The east Australian population is listed Critically Endangered nationally, numbering in the low thousands at best; protected since 1984 in NSW, with designated critical-habitat sites carrying enforceable approach rules.
目撃情報で知られるダイブサイト
動画を見る
公式チャンネルより
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
動画はクリエイター自身のチャンネルへの埋め込みリンクです。当サイトはコンテンツをホストせず、すべての出典を明示しています。