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Type de plongée : Loisir, Récif
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Visibilité : Bonne
Type d'eau Salée
Récemment sur Honolulu, HI
Photos récentes sur Honolulu, HI
Données fournies par EOL.org
Espèces identifiées
Haliphron atlanticus Steenstrup, 1861 (Octopus)
Chelonia mydas Linnaeus 1758 (Green Turtle)
Green turtles are long-lived and may take up to 59 years to reach sexual maturity Undertaking tremendous feats of navigation, adults return to the same beach to breed each season, part of the population in Brazil asto...
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Green turtles are long-lived and may take up to 59 years to reach sexual maturity Undertaking tremendous feats of navigation, adults return to the same beach to breed each season, part of the population in Brazil astonishingly migrates around 2,250 kilometres across the open ocean to breed on the Ascension Islands . Mating tends to occur just offshore of the nesting beaches; using a curved claw on each front flipper and a flat nail at the end of the tail, males are able to grip their mates . Females haul out onto the beach at night and dig large nests with their back flippers beyond the high tide mark, they typically lay between 100 and 150 eggs in one nest and then proceed to cover the eggs with sand; the whole process takes around two hours . A single female returns to breed only once every two to five years but will lay up to nine nests in that one season . Incubation takes between 45 and 70 days, and temperature has been shown to determine of the sex of hatchlings; with females being produced at warmer temperatures . Breaking open their eggs with a special hooked 'egg tooth' that will subsequently be lost; hatchlings use their powerful front flippers to reach the surface, and then proceed to the sea . The soft-bodied juveniles are particularly vulnerable at this time from a variety of predators, such as ghost crabs and gulls on the beach to sharks and dolphins in the water . Unlike other marine turtles, adult green turtles are almost exclusively herbivorous, grazing on seagrasses and algae ; it is assumed that juveniles are more omnivorous although the exact composition of their diet is unknown
Xenentodon cancila (Hamilton, 1822) (silver needlefish)
Occurs primarily in rivers ; also in ponds, canals, beels, and inundated fields . Often found in slow-flowing pools in rivers with a rock or sand substrate . Inhabits large and medium-sized rivers with adults occurri...
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Occurs primarily in rivers ; also in ponds, canals, beels, and inundated fields . Often found in slow-flowing pools in rivers with a rock or sand substrate . Inhabits large and medium-sized rivers with adults occurring in areas that lack floating vegetation . A solitary fish that swims in midwater, usually against the current, and is capable of bursts of speed, especially when in pursuit of its prey. Observed to feed exclusively on crustaceans in the wild; but take live fish only when in an aquarium . Also feeds on small fishes and insects . Oviparous . Eggs may be found attached to objects in the water by tendrils on the egg's surface . This fish is capable of nipping the fingers or killing a person by leaping at them at great speed (Ref. 6028; Kullander , however, suggests that the "killing a person" statement may be exaggerated). Marketed fresh .
Carcharhinus longimanus (Poey, 1861) (Oceanic white-tip shark)
The diet of the oceanic whitetip shark primarily consists of bony fishes such as tuna and mackerel, but also includes stingrays, sea turtles, sea birds, squid, crustaceans, mammalian carrion , and occasionally even rub...
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The diet of the oceanic whitetip shark primarily consists of bony fishes such as tuna and mackerel, but also includes stingrays, sea turtles, sea birds, squid, crustaceans, mammalian carrion , and occasionally even rubbish that is disposed in the sea . The species is usually solitary, but will occasionally congregate in groups during 'feeding frenzies' where food is plentiful , such as around whale carcasses . However, if other shark species are encountered competing for the same food source, the oceanic whitetip shark usually dominates over them, and may become aggressive . This shark is often accompanied by remoras, dolphin fishes and pilot fishes, and reportedly demonstrates an unusual association with the shortfin pilot whale (Globicephala macrorhynchus) in Hawaiian waters . Although the exact reason for this shark swimming along with pods of pilot whales is unknown, it is suspected that oceanic whitetip sharks are following them to sources of squid, which the pilot whales are extremely efficient at locating . This species mates during the early summer in the north-western Atlantic and the south-western Indian Ocean, and females give birth to 1 to 15 live young approximately a year later . Reproduction is viviparous, with live young being born after being nourished by a placental yolk-sac that is attached to the uterine wall by umbilical cords . Sexual maturity is attained at an age of six to seven years for both sexes .
Scarus psittacus Forsskål, 1775 (Common parrotfish)
Inhabit reef flats and lagoon and seaward reefs to at least 25 m depth . Found over corals . Benthopelagic . Initial-phase fish stage usually form small feeding schools . Graze on benthic algae . Secrete a mucus cocoon .
Inhabit reef flats and lagoon and seaward reefs to at least 25 m depth . Found over corals . Benthopelagic . Initial-phase fish stage usually form small feeding schools . Graze on benthic algae . Secrete a mucus cocoon .
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Pulpito
États-Unis
Date : 2013-04-28 - 09:07
Profondeur Max: 15m Durée : 45mins
