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Temp: Bottom 30°C
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Dive type : Recreational
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Visibility: Good
Water: Salt
Recent Pictures in Bangka
Data provided by EOL.org
Species Identified
Triaenodon obesus (Rüppell, 1837) (Whitetip reef shark)
Despite its docile nature during the day this nocturnal shark can become aggressive when hunting at night, thrashing through coral reefs looking for potential prey. The whitetip reef shark usually hunts alone, but is non-t...
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Despite its docile nature during the day this nocturnal shark can become aggressive when hunting at night, thrashing through coral reefs looking for potential prey. The whitetip reef shark usually hunts alone, but is non-territorial and will occasionally work in cooperation with others in the pursuit of prey . Feeding primarily on bottom-dwelling octopus, lobsters, crabs and bony fish, it often chases its prey into a crevice before jamming its body in after it, sealing the exit . The extremely posterior location of the first dorsal fin compared to those of other sharks is an adaptation to this feeding habit, which allows them to get their heads and mouths much further into the gaps and holes in the coral . The whitetip reef shark's mating season varies with location . Reproduction is viviparous and after a gestation period of around a year the female will give birth to one to five live pups, which are completely independent at birth . Both sexes reach sexual maturity at approximately 5 years old, and it is estimated that this species can live to an age of 25 years .
Hippocampus denise Lourie & Randall, 2003 (Denise's pygmy seahorse)
Denise's pygmy seahorse can often be observed during the daytime swimming across the surface of the sea fan on which it lives, and is generally more active than the common pygmy seahorse . Very little is known about t...
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Denise's pygmy seahorse can often be observed during the daytime swimming across the surface of the sea fan on which it lives, and is generally more active than the common pygmy seahorse . Very little is known about the reproductive behaviour of this species, although pregnant individuals have been found in February, May and October, indicating that breeding may occur year-round. Unusually, it is males and not females who brood the young in seahorses. However, while in most species the fertilised eggs develop in a fully enclosed pouch on the underside of the tail, in Denise's pygmy seahorse and common pygmy seahorse males, embryos are housed within the trunk region, without a separate pouch structure. Sexual maturity in Denise's pygmy seahorse occurs at just 13.3 mm of length .
Taeniura lymma (Forsskål, 1775) (Bluespotted ribbontail ray)
Blue-spotted stingrays live alone or in small groups , migrating in large schools into shallow sandy areas on the rising tide in order to feed, and dispersing back into the ocean as the tide falls to shelter in the coral c...
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Blue-spotted stingrays live alone or in small groups , migrating in large schools into shallow sandy areas on the rising tide in order to feed, and dispersing back into the ocean as the tide falls to shelter in the coral crevices of the reef . Feeding most commonly occurs during the day, but sometimes also at night , and the diet consists largely of worms, shrimps, crabs, molluscs and small fish . Prey is often detected through electroreception, a system which senses the electrical fields produced by the prey . Not all small fish and invertebrates are potential prey, as blue-spotted stingrays can often be found at 'cleaning stations', areas of reef where large fish line up and tiny fish or shrimp pick off their dead skin and parasites . In courtship, males often follow females, using their acutely sensitive 'nose' to detect a chemical signal emitted by the female that indicates she is receptive. Breeding occurs from late spring through the summer, and gestation can last anything from four months to a year . Reproduction is ovoviviparous, meaning females give birth to live pups that have hatched from egg cases inside the uterus . Up to seven pups are born per litter and each juvenile is born with the distinctive blue markings of its parents in miniature .
Tetraodontiformes (cowfishes)
Sepiidae (Cuttlefish)
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Carl Johnsen
Indonesia
Date: 2010-07-13 - 10:07
Max Depth: 32m Duration: 53mins
