Cold Water
Weedy Seadragon
Phyllopteryx taeniolatus · Bony fish — family Syngnathidae; also called the common seadragon, an Australian endemic
A weedy seadragon trades the leafy's full costume for jewelry: a slimmer, kelp-red body scattered with yellow spots and violet-blue bars, trailing a few weed-like appendages as it drifts along sponge gardens and kelp lines across Australia's temperate south. It is the more widespread and more often met seadragon, turning up on shore dives and jetty pilings as well as offshore reefs, always slightly farther away than it looks and always mid-meal, vacuuming mysids by the thousand. Males carry the brood — around 250 eggs pressed onto the underside of the tail each breeding season — and site-faithful adults let researchers identify individuals from spot patterns year after year. Give the animal right of way and resist guiding it with a hand or fin wash; a displaced dragon burns energy it budgets tightly.
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。
| 目的地 | 信頼性 | 月 | メモ |
|---|---|---|---|
| South AustraliaAustralia | Resident — seen on most dives | 年間を通じて |
ベストな月、一目でわかる
| 月 | 安定して出会える目的地 |
|---|---|
| January | South Australia |
| February | South Australia |
| March | South Australia |
| April | South Australia |
| May | South Australia |
| June | South Australia |
| July | South Australia |
| August | South Australia |
| September | South Australia |
| October | South Australia |
| November | South Australia |
| December | South Australia |
理解を深める
ハビタット: Kelp lines, sponge gardens, seagrass margins, and jetty piles over sand across Australia's temperate south.
分布域: Southern Australia from New South Wales around to southern Western Australia, including Tasmania.
生態・行動: Drifts singly or in loose pairs along habitat edges; males brood around 250 eggs pressed onto the underside of the tail each breeding season, and individuals can be photo-identified by their spot patterns.
食性: Mysid shrimp and other small crustaceans vacuumed continuously through the tubular snout.
サイズ: 目安は 0.3 m; 確認済みの最大記録 0.46 m (total length).
出会ったときの正しいふるまい方
Protected in Australian waters — no touching or shepherding with hands or fins, and photo-identification projects welcome clear, unharassed side-on images.
保全
Least Concern under its current assessment and protected in Australian waters; kelp decline along the southeast is the pressure researchers watch most closely.
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