Characteristics of the Amphioctopus Marginatus Essay

They must be eukaryotic, meaning they have nucleus, and in the domain Eukarya. In the Linnaean classification this could be in the kingdom Protista like a paramecium. Another Linnaean classification of this could be in kingdom Animalia, since they are heterotrophs and their cells contain a nucleus. They could be grouped as predators, since the organism is engulfing another organism. They could also be grouped based on their locomotion. They could have cilia, legs, or even flagella.

There are twelve species within the same genus and have subtle variations in physical appearances, all living in freshwater, but due

On this image, we see the external dorsal side of a preserved crayfish. As part of the largest animal phylum the Arthropoda, the body of the crayfish is segmented, with jointed appendages and exoskeleton. The paired antennae (1) are long appendages located the front of the mouth and modified for help the animal to sense touch and taste. The antennules (2) are shorter, also paired with the same function but they also help to maintain balance. The chelipeds (3) are located on the front of the thorax, and they are responsible for defence and grasping food. On the at ventral part of the thorax, we found four pairs of walking legs (4), with these legs the crayfish changes locations on the bottom of freshwater lakes, streams and also on land. They

One hundred and fifty million years ago, large aquatic species of reptile such as the Plesiosaur dominated the ocean, and were pre-eminent predators of the sea. The branch of now extinct Plesiosaurs, or ‘near lizards', evolved into variant closely related species specialised to take different niches in the food chain. Such species of Plesiosaur include the phenotypically similar Plesiosauroid and Pliosauroid. The physiological adaptations of the long necked variant, the Plesiosauroid, as it relates to deep sea diving, will be addressed in depth.

The class of the Sepia officinalis is Cephalopoda which can be thought of in three groups: the Nautiloidea, Ammonoidea and Coleoidea each of which have adapted and evolved independently of each other (A Broad Brush History of the Cephalopoda). "Cuttlefish, along with octopuses and squid, are cephalopods—animals from an ancient branch of the tree of life that have been trolling the oceans for more than 500 million years. Cuttlefish were around long before the first shark or fish ever evolved. Their cephalopod ancestors were encased in a shell that acted as protection from predators, but the modern cuttlefish has developed an even better defense: camouflage" (http://www.pbs.org/wnet/nature/animal-guides/animal-guide-cuttlefish/1161/). The Nautiloidea

Gammarus setoseus is a kind of tiny, shrimp-like oceanic organism. Adult G. setosus is typically 20-35mm long (Weslawski 2009), but the organism we use in our research is generally 5-10mm, which can be classified as juvenile. The head and body of G. setosus is covered with grey and translucent thin shell, which have a function of support and protection. On the top part of G. setosus, there are two dark black eyes and a mouthpart, as well as two slender extended tentacles. It has a dozen of limbs arranged in two lines under its body, which

Moon Jellyfish are in the “Animalia Kingdom, Phylum Cnidarian, Class Scyphozoan, Order Semaeostomeae, Family Ulmaridae, and Genus Aurelia” ( Myers, 2016 ; Espinosa, ; 2016 ; Parr, 2016 ; Jones, 2026 ; Hammond, 2016 ; Dewey, 2016). The morphological description of Cnidarians are corals, sea anemones, jellyfish and hydroids. These cnidarians form a diverse phylum that contains ~9000 species, which live in aquatic (predominantly marine) environments. The phylum-defining trait of Cnidaria is the stinging cell, the nematocyte an extrusive organelle used for predation, adhesion and defense (Holstein, 1981; Lengfeld et al., 2009; Tardent and Holstein, 1982) (Steele and Technau; 2011). Also, this phylum, Cnidarians, are divided into two groups, “Anthozoa (sea anemones, corals and sea pens), which live as

Echinoderms, named for their spiny surfaces, include an array of 70000 species which are all mostly sessile marine mammals, that lack overall body segments (Myers, n.d.). Nonetheless, typically ranging from 1cm-2m, they are known to have an extoskelton constructed from hard plates just beneath the skin, and possess a water vascular system- which their tube feet are connected to (Myers, n.d.). Additionally, they are known to show bilateral symmetry as larvae, but then after they metamorphose, feature a strong appearance of radial symmetry (Myers, n.d.).

*It was first described by Palias (1778) who considered it to be a Mollusc and named it Limax lanceolatus. *Costa (1834) described it as a chordateand named it as ‘Branchistoma’. In 1836, Yarrell (1836) named it as Amphioxus lanceolatus. *Amphioxus is about 1-2 inches long, marine organisms usually found in shallow parts of temperate or tropical seas buried in sand with only the head protruding above the sand surface.

This sea cucumber species is easily identifiable by its vibrant yellow color. Some individuals may even have thick, faded gray stripes along the body. They do not grow large in size like some sea cucumbers, but rather grow up to about 2.5-3 inches in length. There are thorn-like protrusions off of their soft, cylindrical body that line five longitudinal ridges of the body thus giving them a pentaradial symmetry. On the underside of the yellow sea cucumber, there are three rows of tube feet that allow for individuals to attach to various surfaces such as rocks and sponges (Figure 1) (“Yellow Sea Cucumber: Colochirus robustus” 2017). These tube feet are controlled through the use of a water vascular system that allows for general movement (Prusch and Whoriskey 1976). At the anterior end of the yellow sea cucumber, or oral end, there are eight feathery feeding tentacles that extend around the mouth (“Yellow Sea Cucumber: Colochirus robustus” 2017).

In early 2011, a strange, haunting discovery was made on the coast of Portland, Maine. A group of tourists enjoying a luxury sunset cruise spotted an unusually large, bat-like creature making its way along the cliff face, and disappearing into a dark cave.

The scientific classification of the Glaucus Atlanticus is as follows: kingdom: Animalia; phylum: Mollusca; class: Gastropoda; unranked: clade Heterobranchia, clade Euthyneura, clade Nudibranchia, clade Dexiarchia, clade

At the turn of the century, American readers were interested only in stories with happy endings, where goodness was praised and evil was punished. They did not particularly care if that was a false interpretation of the way life really was. When men such as Frank Norris, the author of The Octopus, wrote angrily of the injustices and poverty to be found in America, readers turned away. The Octopus made them change their minds. The course of the novel and the reality of its characters held the readers’ attention. It is so powerful a book that people had to care about the wheat growers, almost against their wishes.

I think the most extraordinary organism is the Clione limacina, commonly referred to as the “Sea Angel”. The Sea Angel is in the domain Eukarya. Clione limacina is in the kingdom Animalia (Clione limacina). The phylum of the sea angel is Mollusca (Clione limacina). Gastropoda is the class of the Clione limacina (Clione limacina). The Sea Angel does not have a ranked order; it is unranked and fits in the clade Heterobranchia, Euthyneura, Euopisthobranchia, and Gymnosomata (Clione limacina). The superfamily of the sea angel is Clionoidea (Clione limacina). The Clione limacina is in the Clionidae family (Clione limacina). The subfamily of the Sea angel is Clioninae (Clione limacina). The genus is Clione, and finally the species of the Sea Angel is C. limacina (Clione limacina).

There are four main groups of reptiles, known as Crocodilians, Squamates, Tuataras, and Turtles. Crocodilians consists of large reptiles which includes alligators, crocodiles, gharials, and caimans. Squamates are lizards, snakes, and worm-lizards. A worm-lizard is a subterranean burrowing reptile that resembles an earthworm, a legless lizard. Tuataras are a group of reptiles that are lizard-like in appearance but are different from squamates because their skull isn’t jointed. Turtles are the most ancient reptiles alive today. They have changed very little since they first showed up 220 million years ago. The first turtle appeared 220 million years ago.(Laura Klappenbach)