Clams Oysters and Scallops

Like all clams, they have evolved into a specialized environment over time. Clams began as marine mollusks, but some of them developed the ability to survive in freshwater places where rivers empty into the sea. Those that were able to move further up the river had less predation and survived again. This goes on until freshwater clams are fully a part of the ecosystem and fit in with freshwater predators and freshwater mollusk diseases and have life-cycles and reproduction that matches the advantages of the environment.

The Scallop is a bi-valve that lives on the ocean floor. Their shells remain open normally, unless there is a predator or a disturbance in the area.

tube worms. trust me, it was found by the Shinghi 6500.

The disease you speak of is one of fish (finfish and shellfish). The causative agent is a dinoflagellate, Pfiesteria piscicida. This organism does not cause human disease.

As they grow, they start to form a new softer shell beneath the outter shell. Once they are too big to stay in their old shell, they shed it, and use the new shell they've grown.

Alaska produces half the seafood produced in the US. Not Georgia, not Louisiana

The Alaskan King Crab also has several natural predators that consider them a food source. Fish such as the halibut or pacific cod are good examples of predators as well as sea otters, octopuses and other types of Crab.

They are threatened for being illegally sold thru out the world.

Raw mother of pearl refers to the shell unaltered from the way it is removed from the ocean. It is unpolished, not coated with any preservative, and uncut. It often is sold in bulk, with all the pieces of all sizes mixed in together. You get a lot of waste when you buy it that way.

About a dozen. Take the shell it's a different ballgame.

A giant clam eats zooplankton (tiny animals) and phytoplankton (tiny plants) out of the water by filtering through their gills. Clams share a symbiotic relationship with algae that live on their mantle (the skin inside the shell). The clams sit with their mouths wide open in the sun so the algae can use photosynthesis to feed the clam (if the algae don't get enough sun and start to die, the clam eventually will too). The algae feed off of the clams' waste, also, the water the clams suck in provides needed oxygen for the algae. The clam also eats some of the algae each night.
worms

Clams may be male, female or both (hermaphroditic) depending on the species and the particular stage in its life cycle. For example, the hard clam (quahog) begins its life cycle as a male, then later on may become a female. The various kinds of cockles found around the world are all hermaphroditic as adults. There is no easy way to tell a male from a female clam. Fortunately, either sex tastes equally good, which for most people is probably all that matters in this regard. Quahogs, like other clam species, reproduce through a spawning process in which females release large numbers of eggs into the water, while males release sperm. Fertilization takes place in the open water. Females can release from 1 million to as many as 24 million eggs at one time, and spawning may continue for several months, depending on the water temperature and the availability of food. A single female may release up to 60 million eggs in a season, of which only a small number will become fertilized and grow to become adult clams. Once fertilization takes place, the young clam goes through a larval stage where it is carried by waves and currents. Eventually it develops a shell and sinks to the bottom. Using its muscular foot, it can then move about the bottom to some degree. At this point in the process, you may observe a white, frost like coating of young clams along tidal flats in areas where spawning took place. A single handful of this white mixture would contain thousands of tiny clams. Most would not survive, but some always did, as evidenced by the fresh supply of clams we find each year.

Clams are considered hermaphrodites. They are born as males and as the mature become females until full adulthood. The female lays thousands of eggs and the males come by and fertilize the eggs.

sun

wind

temperature

water

tides

oxygen

predators (eg oyster borer)

foot traffic (humans)

pollution

salinity

substrate (rock, seaweed, sand)

A can of oysters do expire. Expiration dates or best used by dates are marked on packages to ensure freshness before those dates.

pearls

No. The clams belong to the mollusca phylum and everything in this plylum is in fact sexual.

for me its yes!.we didn't put any salt to make it salty when we cooked it, and when i taste it, its kind of salty because oysters live under the water (sea or river). In river it taste also salty because of the tide. The tide is a salty water so it goes inside of the shell of oyster.

we offer oyster shells and many other clam/sea shells .. please write to us at [REMOVED] for more information

you have to use the lake water that you found the clam in to fill your aquarium. you should also place sum mud or dirt from the bottum of the lake and some rocks.

Some animals that eat clams are crabs, snails, monkeys, too.

Clams and Oysters etc. are bivalves. They take water in and filter food out of the water, then they eject the water to allow them to suck more water with food in. Think of these creatires almost like pumps.

Many scientists argue that scallops do not have a brain because they do not resemble the brains of other animals. Other scientists argue that scallops do have a brain because there is an information processing center inside of the scallop.

The average size of a raw oyster is about 50 grams. This translates to just under 2 ounces. Oysters are normally about 3 inches long.