Macro
Nudibranchs
Nudibranchia · Marine gastropod mollusks — order Nudibranchia; order-level overview of more than 3,000 described species
Nudibranchs are the reason macro divers stop covering distance. More than three thousand described species of these shell-less snails crawl the world's seafloors wearing colors that work as warnings, advertisements, and camouflage all at once — and more are named every year, with muck hotspots regularly producing animals new to science. The order splits broadly in two: dorids, carrying a rosette of gills on the back, many recycling sponge toxins into chemical defense; and aeolids, fringed in tentacle-like cerata that store working stinging cells stolen from the hydroids they eat. Rhinophores, the paired head antennae, smell the water for prey and mates. Most species live weeks to a year, so casts turn over fast and no two months on the same site produce the same list. Slow to a crawl and the sand starts producing.
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 |
|---|---|---|---|
| AnilaoPhilippines | Resident — seen on most dives | 全年皆宜 | |
| Lembeh StraitIndonesia | Resident — seen on most dives | 全年皆宜 | |
| Dumaguete, Dauin & Apo IslandPhilippines | Resident — seen on most dives | 全年皆宜 | |
| Poor Knights IslandsNew Zealand | Resident — seen on most dives | 全年皆宜 | |
| British ColumbiaCanada | Resident — seen on most dives | 全年皆宜 | |
| Milne BayPapua New Guinea | Resident — seen on most dives | 全年皆宜 |
最佳月份一览
深入了解
栖息地: Every bottom type divers visit — reef, rubble, sand, kelp, jetty piles, mud — wherever each species' prey grows; the order as a whole ranges from tide pools to the deep sea.
分布范围: All oceans, polar to tropical; the Coral Triangle holds the richest shallow-water diversity known.
习性: Slow, chemically defended browsers; hermaphrodites that mate side by side and lay coiled egg ribbons. Aeolid species store working stinging cells from the hydroids they eat.
食性: Specialists almost to a species: sponges, hydroids, bryozoans, tunicates, anemones, eggs, or other sea slugs.
体型: 通常约 0.03 m; 记录深度可达 0.6 m (order-wide range; most diver-found species are 1–6 cm, while the Spanish dancer reaches about 60 cm).
与它相处时的行为守则
Shoot without touching or relocating — posed slugs on borrowed backgrounds are the macro world's staged wildlife problem. Keep strobe sessions short per animal.
保育
Almost none have been evaluated for the IUCN Red List; their fortunes track the sponges, hydroids, and other prey they depend on.
以此著称的已标注潜点
观看
来自官方渠道
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Sink or Swim? with Monét X Change | Monterey Bay Aquarium
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