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.
Di mana dan kapan melihatnya
"Resident" berarti sebagian besar penyelaman di destinasi tersebut akan menjumpai mereka; "seasonal" berarti kehadirannya dapat diandalkan pada bulan-bulan yang tercantum; selain itu adalah bonus, bukan rencana.
| Destinasi | Keandalan | Bulan | Catatan |
|---|---|---|---|
| AnilaoPhilippines | Resident: seen on most dives | Sepanjang tahun | |
| Lembeh StraitIndonesia | Resident: seen on most dives | Sepanjang tahun | |
| Dumaguete, Dauin & Apo IslandPhilippines | Resident: seen on most dives | Sepanjang tahun | |
| Poor Knights IslandsNew Zealand | Resident: seen on most dives | Sepanjang tahun | |
| British ColumbiaCanada | Resident: seen on most dives | Sepanjang tahun | |
| Milne BayPapua New Guinea | Resident: seen on most dives | Sepanjang tahun |
Bulan terbaik, sekilas pandang
Memahaminya
Habitat: 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.
Sebaran: All oceans, polar to tropical; the Coral Triangle holds the richest shallow-water diversity known.
Perilaku: 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.
Diet: Specialists almost to a species: sponges, hydroids, bryozoans, tunicates, anemones, eggs, or other sea slugs.
Ukuran: biasanya sekitar 0.03 m; terdokumentasi hingga 0.6 m (order-wide range; most diver-found species are 1–6 cm, while the Spanish dancer reaches about 60 cm).
Cara berperilaku di sekitarnya
Shoot without touching or relocating: posed slugs on borrowed backgrounds are the macro world's staged wildlife problem. Keep strobe sessions short per animal.
Konservasi
Almost none have been evaluated for the IUCN Red List; their fortunes track the sponges, hydroids, and other prey they depend on.
Situs-situs terdata yang dikenal dengan hal itu
Lokasi yang disorot dipetakan untuk spesies ini oleh editor kami; angka-angkanya adalah catatan kemunculan GBIF yang dicatat dalam radius sekitar 5 km dari suatu lokasi sejak 1990.
Tonton
Dari saluran resmi
Wildlife of Monterey | New film in our auditorium
Live Aviary Cam | Monterey Bay Aquarium
Live Aviary Cam | Monterey Bay Aquarium
Video adalah tautan tertanam ke saluran milik kreatornya sendiri. Kami tidak meng-host apa pun dan selalu mencantumkan kredit.