Preview

Cephalopod Research Paper

Good Essays
Open Document
Open Document
973 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Cephalopod Research Paper
There are many marine animals that are classified as cephalopods. A cephalopod is an aquatic animal that has bilateral body symmetry, a set of tentacles or arms, and a distinctive head. Cephalopods are the most intelligent and the most mobile of all the molluscs. There are many types of cephalopods: differing in size, shape, and their living habits. Two types of cephalopods are squid and octopi. Although, squid and octopi are both classified as cephalopods, they have many differences. Squid and octopi differ in physical features, living environment, lifespan, behavior, and much more.

The squid has slightly different physical features than the octopus. A squid has eight arms, separated in pairs of two and attached at the bottom of its triangular-shaped head. They have two eyes, one on either side of its head. These eyes are like a camera lens; by positioning the lenses in their eyes, they can focus on something. They cannot see color, but they can see in the dark. Squids have eight arms and two tentacles that are longer than the arms. Suckers and sucker rings, also known as hooks, cover the bottom of the squids' arms and tentacles. Squids also have two fins on the side of their head, mainly used to steer while
…show more content…

They share many of the same features, lifestyles, and behaviors. The squid and the octopus share similar mating styles as well as the time of passing. Both the male octopus and the male squid die shortly after mating, while both the female octopus and female squid stay alive to care for their eggs, then pass. The squid and octopus both have three hearts, a systematic heart, and two branchial hearts that surround the systematic. Although, they have many similarities they have a lot of differences. Differing in where they live, physical features, lifespan, and more. Both are amazing and intelligent

You May Also Find These Documents Helpful

  • Satisfactory Essays

    2. The shrimp is more similar to the lobster than the crab. The shrimp and lobster have body parts that are located in similar regions. The eye, antennae, walking legs, and swimming legs are located in the same regions of the body on both crustaceans.…

    • 268 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    Bio 20 Final Review

    • 317 Words
    • 2 Pages

    a Bio 20 Final Review SA Phylum | Example | Characteristics | /36 | | | Porifera | Glass Sponge | No true tissue, use collar cells No movement as adult | Cnidaria | Jellyfish | Polyp or Medusa Nerve net | Platyhelminthes | Fluke | Nerve cells that act as a brain Live in bodies | Nematoda | Hookworm | Taper at both ends False coelom, parasitic | Annelida | Earthworm or Leech | Segmentation Hydro skeleton | Mollusca | Octopus or Clam | Mantle, Gills, True coelom Muscular foot, Adductor | Arthropoda | Lobster, Spider or Ants | Jointed appendages Molting , Metamorphosis | Echnodermata | Sea star or sand dollar | Spiny skin Regenerate lost/damaged parts | Chordata | Whale or Human | Notochord/backbone Tail, Dorsal nerve chord | Animal Phylum Class | Example | Characteristics | //28 | | | Agnatha | Lamprey | No JawsParasitic | Chondrichthyes | Hammerhead shark | No swim bladderPelvic fins and gill slits |…

    • 317 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    3. Observe and record how fast (in seconds) the isopod moves to one of side of the chamber and settles at or goes past the ending point in the chamber that is equidistant on both sides from where the isopod was originally placed.…

    • 777 Words
    • 4 Pages
    Satisfactory Essays
  • Better Essays

    Crayfish Lab Report

    • 2156 Words
    • 9 Pages

    related to lobsters, crabs, and shrimp. They breathe through the gills as they are aquatic…

    • 2156 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    Inner Fish Chapter Summary

    • 5067 Words
    • 21 Pages

    However, the gill arches during the embryonic stage create similar structure in use, not appearance. The first gill arch creates “the trigeminal nerve in both humans and sharks” (Shubin 91). The cells of the second gill arch gives us cartilage and muscle that helps the creation of the stapes, as well as another bone, the hyoid, that assists in swallowing. In a shark, the same arch “helps with jaw production” that compares to hyoid (Shubin 92). In the third and fourth gill arch, for humans it produces structures necessary for speech and swallow and for sharks it includes parts of tissues that support the gills. Sharks and humans have gill arches in the embryonic stage, but unlike the statement proposes, they do develop into related structures in each…

    • 5067 Words
    • 21 Pages
    Satisfactory Essays
  • Powerful Essays

    Bio 101 Week 4 Assignment

    • 1287 Words
    • 6 Pages

    Unlike its other cousins in the Mollusca family, octopuses have a considerably large brain in comparison to their bodies. In fact, they have the largest and most complex brain of any invertebrate. Even in the United Kingdom, under the Animals (Scientific Procedures) Act of 1986 has given the species a title of honorary vertebrate (Deb, 2010).…

    • 1287 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    I chose to look up a diagram on a sea dwelling organism known as a Jellyfish. Jellyfish have many different forms and are often characterized in different groups. One jellyfish that stood out to me was the Aurelia or also known as the Moon Jellyfish, which is like the basic jellyfish that I’ve always seen in pictures and books growing up. Jellyfish are said to be very effective predators, as one point in the time they were considered to be at the top of food chain. Being effective predators makes them physically fit to be in any environment that they travel to. Even though most would say that jellyfish are horrible swimmers, they are actually in fact many are very strong precise swimmers. Jellyfish can swim horizontally and vertically by using contraction against their bell to expel jets of water to propel them. One drawback of them not being stronger swimmers like larger fish is that they often get caught in sea currents and get stuck in them as they go pass. The bell that propels them has a thick ring of strong muscle, called the coronal muscle. That muscle generates most of the power and energy used by a jellyfish. Now hanging from their subumbrellar is a projection called the manubrim which has the mouth its terminus. The mouth is often surrounded by oral arms normally just for but can sometimes be a multiple of four such as eight, depending on the type of species. Jellyfish don’t have a brain but they do bear a sophisticated computer which tends to all its needs and functions throughout the jellyfishes body. Though not as complex as a normal brain, it does suit the jellyfish well. Now on the edge of the underside of the jellyfish’s bell are its tentacles. The tentacles too can range in different numbers and sometimes some have thousands. These tentacles can be used to feed it, but also are use as it self defense mechanism to protect and also to hunt. The body and tentacles of a jellyfish can discharge…

    • 527 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Their head helps them see and pick up electric waves under water . their head helps them see and hunt . They are carnivores only eat meat favorite is the stingray . Their color is grayish brown and green on the top . They are different in many ways .…

    • 297 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    The Pacific sea nettle has a reddish-brown bell that can grow up to one foot in diameter. The bell is the body of the jellyfish. Like all jellyfish, the Pacific sea nettle has an ectoderm, and an endoderm. The ectoderm is the outer…

    • 880 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    These alluring creatures have been found an oddity among what humans think of when thinking of an octopuses. The Pacific Northwest Tree Octopus has become highly evolved as it has become good at surviving in this odd climate. They have survived natural changes and are still trying to survive human changes. The tree octopus will forever and always be kind of a mystery and an animal of enchantment, with the mysteries hidden in places beyond the genetics, even though it is becoming more endangered than ever as we can see considering that its cousin the Douglas octopus and red-ringer Madrona sucker have gone extinct…

    • 391 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Study Guide 3

    • 313 Words
    • 2 Pages

    Phylum: Mollusca-Gastropods/Bivalves/Cephalopods------Coelomic cavity, first heart/respiratory system. Phylum: Annelida-Earth worms/marine worms/leeches----Coelomic and segmented. Phylum: Arthropoda-Chelicerata/mandibulate. crustaceans/spiders/insects------exoskeleton, jointed appendages, flight.…

    • 313 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Morphology of Molluscs-they have a soft body they are more fragile. They also have more difficulty to support their bodies in terrestrial environments or to fixate to substrates in aquatic habitats. Many species solve these problems by secreting a calcareous carapace, or shell, an exoskeleton to support and protect them and to prevent dehydration.…

    • 328 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Yeti Crabs Adaptations

    • 429 Words
    • 2 Pages

    Surviving in the deep, dark waters… How do they do it? The underwater sea creatures have their own ways of adapting to the harsh environment but they make it despite the circumstances. Between Squids, Zombie Worms, Yeti Crabs and Jellyfish, they all have their own unique skills to adapt. Giant Squids are located near the ocean floor. Their diet consist of mostly fish and other squids making it extremely efficient to get their source of food. The squids main predictor though is the sperm whales. The squids have the advantage of the long tentacles that are tipped with hundreds of powerful toothed suckers which is essential for them to hunt for food. The Giant Squids live for less than five years only because of the growth rings in their statoliths.…

    • 429 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    The changes between these two octopuses is that the Dumbo octopuses legs are shorter and also the webbing around their legs which make them look like an umbrella now goes out nearly to the edge unlike the Grimpoteuthis innominata where their webbing hardly comes out at all. The Dumbo octopuses eyes have actually stayed the same size but its body has gotten smaller while their ears are still around the same size and still have the same function.…

    • 78 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    fish terms

    • 611 Words
    • 3 Pages

    is a fish's breathing organ1Discuss six techniques used for determining the freshness of fish and shellfish…

    • 611 Words
    • 3 Pages
    Good Essays