By:Marcella Zaffari Flammia

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The Bivalvia Family, formally Pelecypoda is the second largest family among the molluscs. All of the molluscs have compressed bodies with two shells halves,which are also called "valves".They are in the Phylum Mollusca and Class Bivalvia. Bivalves include clams, oysters, mussels and numerous other families that live in saltwater, and well as a number of families that live in freshwater. The majority are filter feeders and they can also swim.






Some classes that are directly related to Bivalvia are Pholadomyodia,Cryptodonta and Heterodonta and many others.These are all classes that are related to mollusks such as clams and oysters.


Below is a picture I found of an animal from my class,Bivalvia. Important body parts of the mollusks are its shells, which is made of calcium carbonate and its secreted from the bivalve's mantle.Another part that is crucial to a mollusk are it's gills since they use that for everyday feeding and to drink water.Other important parts are it's heart,kidney,palp and shell teeth.
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Habitats and Adaptions

Bivalves are a very diverse and adaptive and are found almost anywhere in the world, being able to populate most of the world's aquatic habitats.They live in shallow to deep waters and include freshwater to oceanic environments.They are commonly found attached to rocks by the seashore,in seagrass and in mud.Since the are mollusks they tend to always live near and close to water either fresh or salt and that is why you often find them in those locations.


Most bivalves are filter feeders which phytoplankton and zooplankton.They also have cilia on their gills, which help them capture,transport and sort food particles.They eat foods like larvae and eggs, they collect these foods from their surroundings(#ShoppingLocally). They collect all these foods by their tentacles and then in order to eat them they transport it to ciliate groove.Although mollusks are not extremely large like many other animals,many animals eat them. Mollusks eat smaller animals then them,but since they are animals such as whales and sharks mollusks are low in the food chain.
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Life Cycle and Reproduction

Most bivalves have are either female or male, and they reproduce sexually.In order to accomplish this they use a method known as "spowning". (Picture Below). Mollusks lay larvae that hatch from eggs.I included a picture below that is a life cycle of a mollusk. It starts from it being a egg and passing through all fases such as adult and juvenile.
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Bivalves barely ever move and if they do it is very minimal. (ex.Do you know when you go to the beach and they are mollusks in the rocks?Don't they seem like they have been there for ages?That is because they most likely have! #DailyFactswithMarceltheShell)

While in sand bivalves use siphones to get their food, so while they are relaxing a bit they can also eat. #It'sAGoodLife

Bivalves have been around for almost 5 million years and live in almost every water-based habitat on earth!

It's thick shell is used for protection against predators, since it is very hard and awkward for potential predators to tackle.

Mollusks are an important source of food for humans, and during the Roman Times it had a great impact.

They help in controlling pollution since they have a tendency to accumulate heavy substances in their tissues! So, they also help some parts of there ocean stay clean!

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