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We looked inside some of the posts by adaywithmollusca-blog and here's what we found interesting.
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Phylogeny !
The California Brown Sea Hare is in Kingdom Animalia, Class Gastropoda, Order Aplysiidae, Family Aplysia, Genus Tivela and Species Aplysia californica.
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Anatomy !
The California Brown Sea Hare like other Gastropods has two pairs of tentacles one near the mouth and one behind the eye. The anterior end is use for motion and the posterior end is used for smelling. Like other mollusc they have an internal shell and layered beneath a mantle. And like some phyla of molluscs have tentacles. They can grow up to 40 cms and weight up to 2.3 kq.
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Reproduction !
The California Brown Sea Hare are hermaphrodites meaning they have both male and female reproductive organs and reproduce sexually. They can act as either male or female and even switch off. For mating they make a mating line and the first Hare is the only female in the group. The ones that follows it are male to the one in front of it. Then they lay eggs and one individual can lay up to 500 million eggs in its lifetime. The eggs hatch into larvae and usually attach to red algae to metamorphose doubling their weight every 10 days..
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Feeding Behavior !
The California Brown Sea Hare is a herbivores and their diet changes as they grow older. The larvae feeds on the red algae it attaches too. As they get older and bigger they move towards the bottom of the seafloor to which they start eating green and brown algae to which by then have developed jaws and a rasped radula to help them break the tough green algae.
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Habitat !
The California Brown Sea hare lives along the coast of California and to as far down as North Western Mexico. They live in sheltered waters and thrives places where the vegetation is rich. They mainly live in the intertidal zone and the sub-littoral zones (about 18-20m in depth), however they can also live in the photic zone to graze on the red algae.
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Interesting Fact !
The California Sea Hare has a very complicated digestive system. They have an Alimentary canal, which is a place in hare that “horny plates” chew the food and sends it to the multichamber stomach. The Brown California Sea Hare can also take on the color of the algae it grazes on.
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Phylogeny !
This Pismo Clam is in Kingdom Animalia, Class Bivalvia, Order Veneroida, Family Veneridae, Genus Tivela and Species Tivela stultorum.
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Anatomy !
The Pismo Clam like other Bivalves has two thick symmetrical shells that are hinged together and they have sharp teeth. They have vary in colors and patterns. Like other Molluscs they have a shell and a muscular foot (of sorts), they are bilaterally symmetrical, they have different organ systems and they have a siphon which they use to get some of their nutrients. These clams are the largest found in California growing up to 7 inches.
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