mollusks

Good Essays
Mollusks
Page 1
Mollusks comprise a group of soft-bodied animals that includes snails, clams, and sea slugs. The most common characteristic of most mollusks is their shell. One of the largest groups, the snails, is renowned for their shells. Snails are univalves, which means they have one shell. And it is this shell that for many people is the epitome of the ocean. There is perhaps no other ocean treasure that displays more diversity and beauty than the shell. Conchology, the study and collection of shells is a popular hobby the world over. The bivalves, or two-shell mollusks include the clams, scallops, and oysters. It is the oyster that is responsible for producing the most coveted of the ocean's treasures - the pearl. Still other mollusks have lost their shells altogether. The octopus, the squid, and the sea slugs have evolved their own survival strategies to replace their protective armor. Indeed, it is due to the absence of a protective shell the octopus has evolved the largest and most complex brain of all the mollusks. Below is a listing of some of the most common mollusks found on the world's coral reefs.

Yellow Nudibranch
(Notodoris minor
The nudibranch is without a doubt the most colorful of all the mollusks. There are hundreds of species, and are different and exhibit an endless variety of beautiful designs. Nudibranchs are members of the sea slug family and have lost their protective shells. They feed mainly on algae, although some species will eat corals and sponges.

Giant Clam
(Tridacna maxima)
The giant clam is the largest bivalve in the world. Some species can reach 4 feet in length. Their bright colors are caused by tiny algae called zooxanthellae. These algae use sunlight to provide nutrients to the clam and receive other nutrients in return. This species if found in the southwest Pacific, and reaches 14 inches in length.

Giant Clam
(Tridacna crocea)
This species of giant clam is also found in the southwest

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Biology - Mollusks

    • 351 Words
    • 5 Pages

    Phylum Mollusca   Unit 4 Mollusk Introduction Phylum Mollusca  Molluscus = soft  Soft-bodied animals that usually have an internal or external shell.  Includes snails, slugs, clams, squids, and octopi.  True coelom  Complex, interrelated organ systems Body Plan  The body plan of most mollusks have 4 main parts: foot 2. mantle 3. shell 4. visceral mass 1.  Foot: muscular; may be used for crawling, burrowing, or tentacles for capturing prey  Mantle: thin tissue layer…

    • 351 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    Research on Mollusks

    • 4909 Words
    • 20 Pages

    Potential Culture Sites for Green Mussel and Oyster in Metro Manila A Research Paper Presented to Professor Estrella G. Alvarado Mapúa Institute of Technology In partial fulfillment of the requirements in English for Academic Purposes 2 (ENG 11 – B16) Group 10 by Khelly Shan C. Sta. Rita Mark Christian B. Taguiao Nowell Neill D. Teodoro Darren Austin T. Tiu Margaret D. Mallo 18 June 2013 ABSTRACT Green mussel and oyster, locally known as tahong and talaba respectively…

    • 4909 Words
    • 20 Pages
    Good Essays
  • Good Essays

    Mollusks Lab Write-Up

    • 923 Words
    • 4 Pages

    The Mollusks Tori Johnson Kylie Pocrnich December 17, 2012 Zoology In this lab, my partner Kylie and I will be examining the internal and external features of the clam. “Like all mollusks, a clam has a mantle which surrounds its soft body. It also has a muscular foot which enables the clam to burrow itself in mud or sand” (Miller and Levine). Clams are mollusks with two valves also nickname the bivalves. Clams are mostly marine animals however; the clams we will dissect are freshwater clams. Adult…

    • 923 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Due to overpopulation, problems arise. Poverty is one of the problems that will be evident in cause of overpopulation. There will come a time that the population density of a certain area will skyrocket to uncontrollable values, which in turn the area will be prone to disasters such as fire. Fire in cities is a man-made disaster that is present since ancient times. Many people lose their home, thing and also their lives due to fire. The most common reasons of fire are faulty wiring of substandard…

    • 589 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    construction material commonly used in building houses, parts of the house and other infrastructures like buildings, etc. Mortar is a very expensive ingredient that bonds bricks, stones, tiles, and concrete blocks into a structure. On the other hand Mollusk Shells specifically Mussel Shells and Oyster Shells are commonly consumed as food or used in pearl production. But once the meat of the shell is eaten or the pearl is removed, these shells become a non-usable waste products that adds up to our rapidly…

    • 3619 Words
    • 15 Pages
    Powerful Essays
  • Good Essays

    Snails Evolution

    • 535 Words
    • 3 Pages

    all of the above named specimen evolved from the same ancestor. The hypothetical ancestral mollusk has evolved into so many different species that are adapted to live in a variety of environments. Among the many species clams and snail, land snails in particular, have evolved in very different ways. The class of Gastropod is closer to the hypothetical ancestral mollusk than the other classes of mollusks. Gastropods such as snails have a similar body layout that contains the basic broad foot,…

    • 535 Words
    • 3 Pages
    Good Essays
  • Good Essays

    hhj flower

    • 2058 Words
    • 9 Pages

    1. If a mollusk moves by a broad muscular foot, it is probably a) a bivalve b) a gastropod c) two-shelled d) a cephalopod 2. A herbivorous mollusk scrapes algae from rocks and twigs with its a) radula b) poison glands c) foot d) feathery gills 3. The cephalopod that has lost its shell completely is the a) octopus b) slug c) cuttlefish d) nautilus e. squid 4. The blood of annelids typically flows a) only in dorsal vessels c. only in ventral vessels b) in a closed circulatory…

    • 2058 Words
    • 9 Pages
    Good Essays
  • Better Essays

    Chalk Out of Eggshells

    • 3290 Words
    • 14 Pages

    Chapter II Research Body Chalk- is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores. It is common to find chert or flint nodules embedded in chalk. Chalk can also refer to other compounds including magnesium silicate and calcium sulfate. Chalk has greater resistance…

    • 3290 Words
    • 14 Pages
    Better Essays
  • Better Essays

    Investigating which marine animal has the highest level of chitosan through their anti-bacterial properties. SMTP Research Paper Hwa Chong Institution (High School) Mentor: Mr. Chew Tyng Yong Abstract Mollusks and Crustaceans can be found vastly around the world. Arthropods have 1,170,000 described species, and account for over 80% of all known living animal species and Mollusca being the largest marine phylum, comprising about 23% of all the named marine organisms. With…

    • 2148 Words
    • 9 Pages
    Better Essays
  • Good Essays

    Mollusca

    • 2214 Words
    • 9 Pages

    The mollusks constitute one of the largest phyla of animals, both in numbers of living species (at least 47,000, and perhaps many more) and in numbers of individuals. A significant characteristic of mollusks is their possession of a coelom, a fluid-filled cavity that develops within the mesoderm. The coelom not only functions as a hydrostatic skeleton but also provides space within which the internal organs can be suspended by the mesenteries. All mollusks have a soft body (their…

    • 2214 Words
    • 9 Pages
    Good Essays