Fotos
No hay fotos para esta inmersión
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Temp: Surf 18°C Parte inferior 14°C
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Tipo de buceo: Recreo, Cueva, Arrecife, Foto
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Visibilidad: Mala
Agua: Salada
Equipo específico utilizado
- Otro: Tusa - fini+depth meter
- BCD: Scubapro - X force 2
- Mascara: Aqualung - Look 2
- Botella: Aqualung - M12 short
- Aletas: Aqualung - ADV
- Regulador: Seac Sub - X5-Ice
- Regulador: Seac Sub - X5.Ice
- Foco: Kowalski - 620 Select
- Ordenador: Uwatec - Galileo Luna
- Brújula: Suunto - SK 8 Bungee
- Foco: Sub Gear - SP 30 LED
- Otro: Sub Gear - Safety Bouy + Real
- Ordenador: Heinrich Weitkamp - OSTC 2C
- Traje humedo: Beuchat - Med Zip 7mm
- Botas: Beuchat - 7mm boots
- Cámara: Olympus - TG-5
- Pesos: 10 kg
Buceadores recientes en Strande, Schleswig-holstein
Fotos recientes en Strande, Schleswig-holstein
Tienda de buceo & compañeros
Compañeros de inmersión
Michael
Perfil de la inmersión
- 1. Air
- 12L Steel
207 → 87 bar
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- Profundidad media: 5m
Datos proporcionados por EOL.org
Especies identificadas
Ctenolabrus rupestris (Linnaeus, 1758) (Goldsinny-wrasse)
Mytilus edulis Linnaeus, 1758 (edible blue mussel)
The mussel is a filter-feeder; it filters bacteria, plankton, and detritus from the water . When large beds of this gregarious species form, individuals are bonded together with threads of byssus. Predation is the greatest ...
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The mussel is a filter-feeder; it filters bacteria, plankton, and detritus from the water . When large beds of this gregarious species form, individuals are bonded together with threads of byssus. Predation is the greatest cause of mortality; a range of predators take mussels, including dog-whelks (Nucella lapillus), crabs, sea urchins, star-fish, and birds such as the oystercatcher (Haematopus ostralegus) . Although mussels seem fairly defenceless, remarkably they are able to fend off marauding dog whelks and other predatory gastropods; a number of mussels work together to immobilise the predator with bysuss threads . Organisms that attach to mussels, such as seaweeds and barnacles, may increase the risk of the mussel becoming detached by wave action; however, mussels are able to sweep their foot over their shell, which may help to minimise the likelihood of such an organism becoming attached . The sexes are separate, fertilisation occurs externally and spawning peaks in spring and summer . The larval stage is free-swimming and planktonic for around 4 weeks , before settling first on filamentous organisms such as seaweeds . After growing for a while, they detach and drift in the water on a long byssal thread; a mode of dispersal likened to that of young spiders floating through the air on a silk thread . After four weeks or so, the young mussel will have settled again, this time on a mussel bed . Young mussels are thought to have evolved primary settlement on filamentous substrates in order to avoid having to compete with adult mussels . Mussels are host to the pea crab (Pinnotheres pisum), and a copepod (Mytilicola intestinalis), both of which are not parasites, as was once thought, but commensal organisms . Furthermore, mussel beds provide habitats for a variety of marine life, and support higher levels of biodiversity than surrounding mudflats . The biodiversity of the bed increases with its size and age .
Platichthys flesus (Linnaeus, 1758) (European flounder)
Pomatoschistus minutus (Pallas, 1770) (freckled goby)
In the sand goby Pomatoschistus minutus (Teleostei; Gobiidae), a distribution-wide study showed that spatial variation at the rhodopsin gene matches the characteristics of specific light environments. This match sugge...
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In the sand goby Pomatoschistus minutus (Teleostei; Gobiidae), a distribution-wide study showed that spatial variation at the rhodopsin gene matches the characteristics of specific light environments. This match suggests that populations are locally adapted to selective light regimes targeting the RH1 gene.
Cottus gobio Linnaeus, 1758 (European bullhead)
The bullhead is crepuscular; it spends the day under stones or in vegetation and emerges at dusk to feed on small bottom-dwelling invertebrates such as insect larvae and crustaceans, as well as the eggs and larvae of other ...
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The bullhead is crepuscular; it spends the day under stones or in vegetation and emerges at dusk to feed on small bottom-dwelling invertebrates such as insect larvae and crustaceans, as well as the eggs and larvae of other fish . They are occasionally cannibalistic, particularly of eggs in other nests . Bullheads are visual, ambush predators, and are good swimmers, moving quickly in short, sharp darts along the bed . The spawning season occurs between February and June, and fertilisation is external . The eggs are laid underneath stones or in a pit, and then guarded and cared for by the male who fans them to ensure that they receive enough oxygen . The eggs hatch two to four weeks later, and the larvae feed on their yolk sac for a further two weeks before dispersing. Maturity is reached within two years . Bullheads often behave aggressively towards one another, and competition for shelter and foraging space can be intense; research is currently being carried out by the University of Southampton into this area . Being small, bullheads are vulnerable to a wide range of predators, particularly brown trout, pike, grey heron, kingfisher and dippers .
Cancer pagurus (Edible crab)
Adult edible crabs take a very wide range of prey species, and are important predators of molluscs . When on sediments, these crabs dig large pits in order to find food . Females reach maturity at carapace widths of 12...
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Adult edible crabs take a very wide range of prey species, and are important predators of molluscs . When on sediments, these crabs dig large pits in order to find food . Females reach maturity at carapace widths of 12.7 cm, whereas in males the figure is closer to 11 cm . Breeding takes place in winter. For a period before mating, the male holds onto a female until she moults. After moulting she is receptive to mating and copulation takes place. The female digs a pit in the sediment which she retreats into to lays the eggs. She then carries the fertilised eggs for seven to eight months before they hatch in spring or summer. Large female can carry a staggering 20 million eggs at any one time. After hatching, the larvae are planktonic for up to 30 days. Edible crabs are known to live up to 20 years of age . The edible crab is the most commercially important species of crab in western Europe . It is fished offshore using baited pots .
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Marco
Alemania
Fecha: 2017-07-23 - 11:00
Profundidad máxima: 10.9m Duración: 84mins
