Ap Biology Essay

Devilfish. This purple, seven-armed octopoid monstrosity is the size of a horse, with hook-lined tentacles and cold, blue eyes. Devilfish CR 4. XP 1,200.

A) The organism I chose was the blue whale. The blue whale (scientific name: Balaenoptera musculus) is the largest marine animal with the weight of about 180 metric tons (180,000 kg). They weigh around 150-170 metric tons (150,000 kg) together with a length of about 27m (89 feet). The largest blue whale ever measured was 190 metric tons (190,000 kg), and the longest whale recorded was 33.6 m (110 feet). It is the biggest animal ever discovered (so far). The head only cover 1/4th (25%) of their entire body length. Color: Blue whales are blue-gray in color with white patches covering their body. The undersides of the flippers are lighter in color, and sometimes white, while the underside of the tail is dark. In Antarctica, the North Pacific, and the North Atlantic,

2. Tiktaalik has scales and fins, like a fish. It also has a flat head and a neck, like

One species incorporated the xenacanth sharks. They seem to have avoided extermination by relocating into freshwater. One group, Xenacanthus, was a seventy five centimeters in length, eel-like shark that looked like a modern conger eel. Its dorsal fin extended along its back and around the tail and connected to an odd double anal fin. The main striking feature was a single self-protective spine growing from the top of its head.

The Stereolepis gigas, or Giant sea bass, is a fish native to California. They are very large creatures, their typical weight being 562 pounds, and their typical length being 8 feet. Aside from their size, they have big, robust heads with large mouths to help capture their prey. They have long dorsal spines that fit into grooves in their back to help them swim. Their color can vary from reddish brown, to grey, and to dark brown. Most of the time, they have dark colored spots. They have a surprisingly long lifespan, on average, they live to be 75 years or older.

Tracy Romano is an expert at that aquarium on belugas and describes them as having a dorsal ridge, rather than a dorsal fin.

They all have 5-7 gill slits on either side of their head, but unlike other fish they are not hidden and can extract oxygen throughout many ways. Also they have a modified slit beside the eye which helps bottom dwelling sharks to breathe. Meanwhile resting they pump water over gills to have a constant supply of water. Sadly there are only a few species who cannot use this process thus never resting. They also have 6 different fins and they can only drift away directly in front of them because of their tails first direction. Also there's a special covering that protects damage and parasites thus gaining energy and therefore reducing turbulence. They have a cartilaginous skeleton that reduces their weight however they do not have ribs when surfaced at land they can be easily crushed by their own weight. Their own jaw is attached to their cranium because the surface of the jaw needs extra support due to the exposure of physical stress and need for strength. Also there's cartilage in the snout that's spongy and flexible to absorb the power of impacts. Their tails have thrust as well as acceleration and speed, they also have a large liver that contains oil, cartilage and squalene that contributes in a dynamic lift to maintain depth when not swimming. They also have 5 great senses: A sharp sense of smell, and increased visibility in dark waters, sharp sense of hearing and it's debated whether they can hear from several miles away and they have the greatest electric sensitivity from any animal that can sense frequencies from 25-50

There are many Marine Angelfish FreshwaterAngelfish and Sea Goblin."A Goblin shak can grow to at last 12 feet long.Sea goblin is called a goblin shark.Gobiln shark.Sea Gobiln are amasing cretaters

There are many different types of fish, but there are four classes: jawless fish, cartilaginous fish, ray-finned fish, and lobe-finned fish. Jawless fish have no jaw but have teeth like the lamprey. Some cartilaginous fish lose their teeth but eventually grow them back like manta rays and sharks. Finally, lobe-finned fish, which are uncommon and rare, are named after their large lobe-like fins. These fish live deep in the ocean and includes the lungfish and, the thought to be extinct, coelacanths.

Lepidodosteus – *It is commonly known as gar-pike. *It is widely distributed in rivers of USA. * It is among the most primitive fish species still alive today. *The body is elongated and cylindrical with a long snout having sharp teeth. *The snout varies in width according to the species. *Both jaws and nasal bone are covered with

These apex predators fall under the classification class Chondrichthyes, which is comprised of cartilaginous skeleton. Chondrichthyes is sub-divided into two classes; the Elasmobranchii, composed of sharks, skates and rays, and the Holocephali (“Shark Taxonomy” 8). As we move further down the scientific classification, identifying these similar looking creatures become more difficult. Their order is separated into two super-orders, which are the extinct Cladoselachimorph and the Euselachii; composed of 12 orders of which only nine are amongst us today (9). Many scientists believe that sharks descended from an eyeless, finless, and boneless leaf shaped fish and that they came to existence at around 400 million years ago (“Shark Evolution” 1). Documented fossil records show that there were over 3,000 types of sharks and may have existed at the same period of time (Jones, “The Epic History of Sharks”). The reason it is difficult to discover them all is due to the rotting of the cartilaginous bone structure (“Shark

Like sharks, rays to have cartilaginous skeletons. They are lighter and even their skull is flattened.

The beadlet anemone (Beadlet anemone) is a jelly-like sea animal with tentacles. It has radial symmetry, which is symmetry around the central axis. It typically weighs 0.42 grams. It is 5 centimeters across and has a circular shape that looks like a bush. The base is dark red and the tentacles are a brighter red.

Campylomormyrus is a genus with typical “elephant fish” morphology. It has a long snout pointed ventrally at angle typically over 30 degrees with a small terminal mouth at the end. As will most other Mormyrids, they have a very small caudal peduncle supporting a deeply forked tail fins. There dorsal and anal fins are positioned posteriorly at equal distance from the head. The pelvic fins are small and positioned abdominally. The body shape is both elongate and compressed. As with most other Mormyrids they have relatively large brains making up more than 3% of their total body mass (Nilsson

TRAITS. Anchoa lyolepis, also known as the short finger anchovy has the additional scientific name of Stolephorus lyolepis (Evermann & Marsh, 1902).The body is round and elongated. Its snout is long and pointed, slightly longer than eye diameter, with a long pointed maxilla; the upper jaw bone (Wikipedia, 2016), that almost extends to the gill opening. The canals of the operculum; a hard flap that protects and covers the gills (Wikipedia, 2015), are of a panamensis-type [Cryptoheros panamensis; is a freshwater fish that is a member of the Actinipterygii] (Fisebase.org). The psuedobranch; the reduced first arch of gills (Wikipedia, 2015), is longer than the diameter of the eye and extends to the operculum with 30 filaments. Their pectoral fin; anterior pair of fins (Thefreedictionary, 2016), has a first fin ray; a bony soft ray or sharp spine that projects from the body and is covered by skin (Wikipedia, 2016), that is shorter than the filament; a protein thread through which gaseous and ionic uptake occur (Wikipedia, 2016). The anal fin is short with 15-22 fin rays. It has a silver stripe along the flank, with a dark line above it, between