The End of the Line – Final cinema trailer
Where have all the fish gone?
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The End of the Line – Final cinema trailer
Where have all the fish gone?
The benthic and abyssal zones are where the cold, dark, deep waters of the ocean are found. These zones are the largest part of the ocean biome covering more than 80% of the vast ocean. The intertidal zone where the water meets land and the pelagic zone, or open ocean, make up a much smaller portion of the total area of the ocean, yet an abundance of ocean life is found in these zones because sunlight penetrates the water. To get an idea of how vast the ocean’s depths are, consider that 79% of the entire volume of the earth’s biosphere consists waters with depths greater than 1,000 m. Until recently, the deep sea was largely unexplored. But advances in deep sea submersibles and image capturing and sampling technologies are increasing the opportunities for marine biologists to observe and uncover the mysteries of the deep ocean realm.
Deep sea research is vital because this area is such an enormous part of the biosphere. Despite its depth and distance, it is still our backyard. There may be life-altering discoveries found at the bottom of the ocean.
The zone beneath the pelagic zones is the benthic zone and is defined as the lowest level of a body of water such as an ocean or a lake, and includes the bottom sediments. Organisms living in this zone are called benthos. They generally live in a close relationship with the bottom of the sea; with many of them permanently attached to it. In oceanic environments, benthic habitats can be further zoned by depth. From the shallowest to the deepest are: the epipelagic (less than 200 meters), the mesopelagic (200–1000 meters), the bathyal (pelagic) (1,000–4,000 meters), the abyssal (pelagic) (4000–6,000 meters) and the deepest, the hadal (pelagic) (below 6,000 meters). The abyssal zone is found beneath the benthic zone, extending down to the deepest depths of the ocean, which are about 33,000 feet deep. Deep sea thermal vents can be found in this zone. The hadal zone is used to define the waters of the deep sea trenches.
Exploration of these zones has presented a challenge to scientists for decades and much remains to be discovered. However, advances in technology are increasingly allowing scientists to learn more about the strange and mysterious life that exists in this harsh environment. Life in the deep sea must withstand total darkness, extreme cold, and great pressure. To learn more about deep-sea marine life, sophisticated data collection devices have been developed to collect observations and even geological and biological samples from the deep. Advances in observational equipment such as fiber optics that use LED light and low light cameras has increased our understanding of the behaviors and characteristics of deep sea creatures in their natural habitat. Remotely operated vehicles (ROVs) have been used underwater since the 1950s. ROVs are basically unmanned submarine robots with umbilical cables used to transmit data between the vehicle and researcher for remote operation in areas where diving is constrained by physical hazards. ROVs are often fitted with video and still cameras as well as with mechanical tools for specimen retrieval and measurements. Manned deep sea submersibles are also used to explore the ocean’s depths. Alvin is a deep sea submersible built in 1964 that has been used extensively over the past 4 decades to shed light on the black ocean depths. This sub has been used for more than 4,000 dives reaching a maximum depth of more than 4,500 m.
So kurz vor der Interzoo wird klar das LED und NANO das Thema der Meeresaquaristik sein werden. Bei einigen Meerwasserhändler schon länger zu sehen, gibt es nun von AquaConnect ebenfalls einen LED Leuchte für´s Aquarium.
Die StarLED besitzt einen modernen Glas-Lampenschirm und ist mit einem beschichteten 20 Watt LED Strahler mit E27 Fassung bestückt. Die extrem hohe Lichtausbeute und die lange Lebensdauer des Leuchtmittels prädestiniert die StarLED für die energieeffiziente Ausleuchtung Ihres Aquariums.
Die StarLED ist ab sofort verfügbar.
- Lampe mit E27 Fassung und Verbindungskabel
- formschöner Glas-Lampenschirm
- beschichteter, gutgekühlter 20 Watt PAR Strahler in cw, E27
- Lichtfarbe: 6800 Kelvin, cool white
Zum Betrieb benötigen Sie lediglich eine 240 V Steckdose und ggfls. eine Zeitschaltuhr. Alle Teile der Lampe sind auch separat erhältlich. Kunden, die lediglich die Lampenfunktionalität nutzen wollen, erhalten die Lampe auch ohne Glas-Lampenschirm.
Soweit AquaConnect zu Ihrer neuen Leuchte. Mit einem empf VK von 298 Euro und 198 Euro für eine Ersatzleuchte fällt es schwer an einen Erfolg dieses Konzeptes zu glauben. Es wurden leider keine Angaben über das Spektrum , Lebensdauer oder die Art der verwendeten LED ´s gemacht.
Schade etws mehr Informationen wären wirklich wichtig , vor allem wenn es sich im eine neue Technologie handelt
Vor ca 2 Jahren tauchte dieser genial gezeichnete Clownfish in diversen amerikanischen Foren auf. Gefangen wurde der Fisch in Papua Neuguinea im Rahmen des Sea Smart Programmes. Nach meinen Informationen wird es in den nächsten Tagen wieder einige dieser Tiere im Handel geben. Ich gehe auch davon aus das sich einige der bekannten Züchtereien sich um de Tiere bemühen, und mit viel Glück werden wir hier in Good Old Europe auch mal an eines dieser tollen Tiere kommen.
The Deep Sea by marinebio.org
“Over 60% of our planet is covered by water more than a mile deep. The deep sea is the largest habitat on earth and is largely unexplored. More people have traveled into space than have traveled to the deep ocean realm….” – The Blue Planet Seas of Life
Physical Characteristics of the Deep Sea
The physical characteristics of the deep sea are abiotic factors that deep sea life must contend with to survive. Light, pressure, temperature, oxygen and food have all led to the fascinating adaptions of deep sea life used to see, feel, feed, reproduce, move, and avoid being eaten by predators.
Adaptations of deep-sea organisms
Some of the most fascinating and amazing characteristics of deep sea creatures are the adaptations they have developed to survive the harsh environment. We’ve briefly covered adaptations such as large eyes, bioluminescence, strong sense of smell, body composition (absence of swim bladder), expandable stomachs, absence of jaws, and bioluminescence. Color is another adaptation developed for camoflauge and protection from predators. Deep sea fish are often transparent, black, silvery and even red in color. The absence of red light at these depths keeps them concealed from both predators and prey.
Adaptations have also evolved to capture prey. In addition to their large mouths, deep sea fish, such as the deep sea anglerfish, often have extremely long teeth that point inward. This ensures that any prey captured has little chance of escape. Deep sea species such as the gulper eel have huge hinged jaws, which enables them to swallow large prey. Some deep sea species, such as the deep sea anglerfish and the viperfish, are also equipped with a long, thin modified dorsal fin on their heads tipped with a photophore lit with biolumenescence used to lure prey.
Deep sea anglerfish have an interesting reproductive adaptation. Males are tiny in comparison to females and attach themselves to their mate using hooked teeth, establishing a parasitic relationship for life. The blood vessels of the male merges with the female’s so that he receives nourishment from her. In exchange, the female is provided with a very reliable sperm source.
(c) by marinebio.org
New arrivals of colourful corals can be seen at www.Extremecorals.de
The mixture of four specially developed foods will ensure a balanced diet for all saltwater fish.
Last week we showed you a video of the Rock Oyster, Now again from Morphologic Studios. As you can see the exterior shell of the oyster is overgrown with hydroids. The little beasts are known to many an aquarist and are a pest in our tanks. Hydroids can create large ‘mats’ and smother almost all our corals. It’s possible this little snail is indeed a good opponent against this plague. Phidiana Lynceus a Caribbean slug taking a stroll across the shell.
Neu eingetroffene Tiere und viele farbenprächtige Ableger sind bei www.Extremecorals.de eingestellt worden.