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.
Где и когда увидеть
«Постоянные» — значит, большинство погружений в этом месте позволяет встретить их; «сезонные» — значит, они стабильно присутствуют в указанные месяцы; всё остальное — приятный бонус, а не повод строить планы.
| Направление | Достоверность | Месяцы | Примечания |
|---|---|---|---|
| AnilaoPhilippines | Resident — seen on most dives | Круглый год | |
| Lembeh StraitIndonesia | Resident — seen on most dives | Круглый год | |
| Dumaguete, Dauin & Apo IslandPhilippines | Resident — seen on most dives | Круглый год | |
| Poor Knights IslandsNew Zealand | Resident — seen on most dives | Круглый год | |
| British ColumbiaCanada | Resident — seen on most dives | Круглый год | |
| Milne BayPapua New Guinea | Resident — seen on most dives | Круглый год |
Лучший месяц — коротко
Как их понять
Среда обитания: 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.
Ареал: All oceans, polar to tropical; the Coral Triangle holds the richest shallow-water diversity known.
Поведение: 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.
Рацион питания: Specialists almost to a species: sponges, hydroids, bryozoans, tunicates, anemones, eggs, or other sea slugs.
Размер: как правило, около 0.03 m; задокументировано до 0.6 m (order-wide range; most diver-found species are 1–6 cm, while the Spanish dancer reaches about 60 cm).
Как вести себя рядом с ним
Shoot without touching or relocating — posed slugs on borrowed backgrounds are the macro world's staged wildlife problem. Keep strobe sessions short per animal.
Охрана природы
Almost none have been evaluated for the IUCN Red List; their fortunes track the sponges, hydroids, and other prey they depend on.
Известные места на карте
Смотреть
Из официальных источников
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
Видео — это встроенные ссылки на каналы их авторов: мы ничего не размещаем у себя и указываем все источники.