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Amphioctopus aegina, commonly referred to as the marbled octopus or the sandbird octopus, [2] is a bottom dwelling species residing in the coastal zone of the Indo-West Pacific. [ 3 ] Planktonic hatchlings and eggs are laid by females predominantly during the months of January and October, however they have been known to reproduce year-round.
The eggs of Pinnoctopus cordifomis are of intermediate size (6.43 ± 0.21 mm L; 1.45 ± 0.11 mm W; 6.41 ± 0.52 mg TW) the yolk can be seen through the wall of the egg and represents approximately 57% of the eggs size, they are pear-shaped. Once the eggs are hatched paralarvae are released which survive without intervention for the duration of ...
This also makes it the longest-living octopus – most octopuses only live for 1 or 2 years – which this octopus beats with its brooding period alone. [ 3 ] [ 4 ] Female Graneledone boreopacifica tend to brood their eggs between the depths of 1,200 and 2,000 metres (3,900 and 6,600 ft); the eggs were never unattended.
Female giant Pacific octopus guarding strings of eggs. About forty days after mating, the female giant Pacific octopus attaches strings of small fertilised eggs (10,000 to 70,000 in total) to rocks in a crevice or under an overhang. Here she guards and cares for them for about five months (160 days) until they hatch. [70]
Macroctopus maorum is a large octopus and it is regularly described as a ‘robust’ species, it is a member of the Octopus macropus species complex. The morphological traits characteristic of this complex are a high number of gill lamellae, a robust conical copulatory organ and arms of varying length with long unequal dorsal arms generally four to six times longer than the mantle.
The Atlantic pygmy octopus (Octopus joubini), also known as the small-egg Caribbean pygmy octopus, is a small species of octopus in the order Octopoda. Fully grown, this cephalopod reaches a mantle length of 4.5 cm (1.8 inches) with arms up to 9 cm (3.5 inches) long. [ 2 ]
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Scavengers and other organisms often attempt to eat octopus eggs, even when the female is present to protect them. Giant Pacific octopus paralarvae are preyed upon by many other zooplankton and filter feeders. Marine mammals, such as harbor seals, sea otters, and sperm whales depend upon the giant Pacific octopus as a source of food.