How to use dorsal fin in a sentence

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Sentence Examples Male courtship display includes extending the dorsal fin, pursuing, and eventually biting the female. Zander are often called pikeperch as they resemble the pike with their elongated body and head, and the perch with their spiny dorsal fin. Blunt-headed, it could be mistaken for a pilot whale but for its dolphin hallmark, the sharp, recurved dorsal fin. Between three and six long but narrow predorsal scales are located anterior to the origin of the dorsal fin. Threespine sticklebacks are laterally compressed, fusiform shaped fish with three sharp, erectile spines at the forward part of the dorsal fin. Thus, at this speed, the dorsal fin supplements the thrust produced by the oscillating pectoral and caudal fins. Like all salmonids the grayling has a small adipose fin behind the dorsal fin. With their long, slim bodies, they can be recognised easily by the large white tip on their first dorsal fin and the upper lobe of the tail. Flagfin mojarra has a dark marking on the dorsal fin with a white stripe just below the dark marking. The fins have strong leading rays, which form a row of sharp spines along the dorsal fin. Bream have a needle sharp set of spines running through the dorsal fin similar to bass. Pectoral fin on upper side has black tip thought to mimic dorsal fin of venomous weever fish to deter predators. Clinids tend to have more spines than rays on the dorsal fin, which usually begins close to the head. Second, in most basal ray-finned fishes such as sturgeon and trout a single dorsal fin is present and is supported by flexible fin rays. The first dorsal fin has four rays, the lips are smooth and are roughly the same thickness as the diameter of the eye. True roach have 9-10 rays in their dorsal fin and 42 to 45 scales along the lateral line. The dorsal fin is also level with the pelvic fin in roach, in rudd it is behind the pelvic fin. Male Sailfin Mollies are impressive fish, decorated with a very large sail-like dorsal fin. Their long, whip-like tail has a small dorsal fin near its base and up to five venomous spines. Some snipefish, such as the ones on the cover, also have a long, pointed spine stretching back from the dorsal fin. Show More Sentences Both the Greater Weever and the Lesser Weever are capable of inflicting a sharp and painful sting from the spiny rays of the first dorsal fin. The ocelli on the spinous dorsal fin of males are metallic blue, surrounded by a golden ring. Instead of a dorsal fin they have a prominent dorsal hump about two-thirds of the way down their back. A high bank angle is characteristic of penguins and sea lions which also lack a dorsal fin and turn using elongate pectoral flippers. Look at the shape and size of the dorsal fin, pectoral fins, and the caudal fin. Paired pectoral fins and a dorsal fin were present, and the caudal fin was asymmetrical with a large upper lobe. Apart from its dorsal fin it was immaculate and spun the scales round to 23 lb 4oz. The shape of the dorsal fin is variable ranging from low and stubby with a broad base to high and falcate. Beaked whales have a small, falcate dorsal fin, which is set fairly far back on their bodies. They get the name rooster because the dorsal fin looks similar to the comb on a cockerel's head. The whale is so big that its head disappears long before the dorsal fin and the huge flukes are seen. Over five feet tall, the male's dorsal fin is triangular while at half the size, the female's dorsal fin is curved. Visible here on the dorsal fin is the radio tag used to monitor the fish's movements for the purposes of the study. The dorsal fin is curved and the undersides of flippers and tail flukes are dark grey or bluish in colour. It is characterized by a deep blue-green back, silvery sides and a white belly with black irregular spots on the back, dorsal fin and both lobes of the tail. By photographing the dorsal fin of killer whales, researchers can tell individual whales apart. The fish may have speckles on its lower side, and has distinctive pale markings at the base of its dorsal fin that are visible from above. Take each separate fluke or dorsal fin image and try to match it to the main pages. They have a slender body with a low dorsal hump and no dorsal fin. Porpoises have rounded heads and a small triangular dorsal fin at the middle of their backs. Show More Sentences It was noted that accessing the ELT, in order to turn it on or off, required hand tools to remove the dorsal fin fairing screws. These small fish are deep bodied with a long spined dorsal fin. It has silvery blue skin and a red dorsal fin that runs the length of its body. Wrasses characteristically have a protractile mouth, cycloid scales, and a single continuous dorsal fin lacking an obvious notch between the soft and spiny portions. They have white patches above the eye, from the lower jaw to the stomach and a grayish-white saddle patch just behind the dorsal fin. The dorsal fin generally was uncoloured, unspotted, and semitransparent. Reproductively active individuals may have a uniform dark gray body with pale abdominal striping and a pale margin on the spinous region of the dorsal fin. They also turn pinkish violet around the head with a reddish tinge at the base of the dorsal fin. And once the shark is on board it'll thrash about, of course, making the task of fixing the tag to its dorsal fin rather tricky. Their fleet, grey-brown bodies break the surface subtly, showing only a stubby dorsal fin. The shape of the dorsal fin and the saddle patch, as well as natural nicks and scars on them, are unique to each killer whale. It is distinguished by its thick, white skin, its prominent, rounded forehead and the absence of a dorsal fin. They have a dorsal fin made up of a rough and spiny portion and a smoother, flat portion which is angled forward. This speedster is the only dolphin in the north Pacific that doesn't have a dorsal fin. An anglerfish depends on its prey being fooled by its camouflage and by the fleshy lure into which the first ray of its dorsal fin has been modified. In appearance, they are characterized by a reduced spinous dorsal fin and a slightly protruding lower jaw. Second, as the whale begins to dive, it bends its back, showing a rounded hump underneath its short, nubby dorsal fin. It was also covered in bony overlapping plates, like all placoderms, but had weak jaws and a peculiar high-crested bone, somewhat like a dorsal fin, straddled its back. Almost all have a dorsal fin on their backs that can take on many forms depending on the species. A long dorsal fin runs from the middle of the back and is continuous with a similar ventral fin. Show More Sentences The first dorsal fin has a single spine and 9 to 11 soft rays, while the second has 38 to 43 soft rays. The ruffe also has a large, spiny dorsal fin likely distasteful to its predators. The most obvious features to recognize a ruffe are the ruffe's large, continuous dorsal fin and its slightly downturned mouth. The flippers, fluke, and the tall, falcate, dorsal fin are all a darker grey than the body. For those sharks deemed to be in good health, a Hallprint © nylon dart tag, labeled with unique identifying numbers, was inserted into the dorsal musculature at the base of the first dorsal fin prior to release. Now named Knobble, so-called because of a knobble on his dorsal fin, the minke has become quite an attraction. Behind every dorsal fin there is a gray area called a saddle patch. It has a smallish dorsal fin and pointed pectoral flippers. A stonefish is perfectly hidden and makes no movement until prodded with a stick or, more often, until it is stepped on, at which time it erects its dorsal fin spines. Behind the dorsal fin is a grey area called a saddle patch. The carp is also distinguished from its crucian and Prussian cousins by the shape of its long dorsal fin, the leading edge being angular, while that of the other two is more rounded. This species is very easily recognisable by the white patches on the ends of the dorsal fin and the two pectorals, which in this sort are especially large for a shark. The most imposing natural animal of the Haida world, the killer whale, is signified by a tall dorsal fin, fluked tail and rounded snout with many teeth. So when you talk about fish caught around the dorsal fin and all ragged, those were the five I threw out actually because they obviously had been in there a long period of time. It has a small, rounded head and a curved dorsal fin. Researchers had to take thousands of photographs of these elusive whales before they could tell individuals apart by slight differences in dorsal fin shape, body colour and scars. Flippers are small and rounded, and the bowhead has no dorsal fin. A variable gray or white saddle is usually present behind the dorsal fin. Every whale is unique: its coloration pattern, the shape of its dorsal fin and scars are all distinguishing features that help in its identification. Scientific research based on the photo-identification of local dolphins can also be established, by producing a catalogue with individual ID from dorsal fin shape, and individual markings of all the dolphins spotted. Show More Sentences In large individuals, the dorsal fin may flop to one side when above the surface. Dolphins have two flippers on the underside toward the head, a dorsal fin and a tail fin. All species have a dorsal fin to prevent themselves from involuntarily spinning in the water. They have a very well defined and triangular dorsal fin, allowing them to steer better in the water. Bottlenose dolphins are grey, varying from dark grey at the top near the dorsal fin to very light grey and almost white at the underside. The dorsal fin usually shows phenotypic variations that help discriminate among populations. The body is robust, and the animal is at its maximum girth just in front of its triangular dorsal fin. Most of the length of the back, including dorsal fin and blowholes, appears at once when the whale surfaces to breathe. The fin whale is usually distinguished by its tall spout, long back, prominent dorsal fin, and asymmetrical colouration. The blowholes and dorsal fin are often exposed above the water surface almost simultaneously. It has a series of ridges on the back's caudal third instead of a dorsal fin. The largest ridge was called the 'hump' by whalers, and can be mistaken for a dorsal fin because of its shape and size. The dorsal fin is thick and falcate in nature, and is located about a third of the way down the length of the animal. An individual killer whale can often be identified from its dorsal fin and saddle patch. Variations such as nicks, scratches, and tears on the dorsal fin and the pattern of white or grey in the saddle patch are unique. Risso's dolphin has a relatively large anterior body and dorsal fin, while the posterior tapers to a relatively narrow tail. When it surfaces: Its explosive and sonorous blow can attain a height of six metres. The dorsal fin breaks the surface long after the blow is sighted. The cow has 60 cm gash near her dorsal fin that cuts approximately 15 cm deep into the blubber, but the cut does not appear to have reached muscle tissue. He had an oily dorsal fin of a nose and a gracelessness in his slightest actions. The man who'd noticed me walked up the fish's tail then and stood on top of the creature, cockily resting an elbow on the dorsal fin as if he were bellying up to a bar. Show More Sentences The bowfin has a long spineless dorsal fin with about 58 rays. You are scanning the St. Lawrence, quietly contemplating the squawking gulls when suddenly you spot the very large dorsal fin of a killer whale that appears to be pursuing a minke whale! Its dorsal fin is backswept and it has long, sickle-shaped pectoral fins. When the whale surfaces, the dorsal fin is visible soon after the spout. Assessment of epidermal condition and calf size of Fiordland bottlenose dolphin Tursiops truncatus populations using dorsal fin photographs and photogrammetry. The flippers, dorsal fin, tail fin and back are a dark grey. The upper body and flanks are dark grey with light grey patches, including a 'saddle' behind the dorsal fin, while the underside is light grey to almost white in color. Examples from Classical Literature Just as the pikes attack is at its height, the rasper suddenly raises his twelve-spined dorsal fin. Although it is highly variable, the dorsal fin most closely resembles that of the blue whale. They are descried from the ship by means of the dorsal fin, which is above the water. Nor did he see the dorsal fin break surface and approach him from the rear. Mart guessed instantly that it was the dorsal fin of a shark, but he had seen no fin of such size before. The dorsal fin is represented by a whole series of lowish humps, decreasing in elevation from before backwards. The dorsal fin is small, located behind the midpoint of the back, and variable in shape from falcate to triangular. In the region of the trunk there is present an uninterrupted dorsal fin continuous with a ventral fin round the end of the tail. There are three species of large whales without a dorsal fin in the western North Atlantic Ocean. The spinous armature of the opercle and the two spines of the first dorsal fin constitute the weapons. The dorsal fin, like that of the Atlantic pilot whale, is one of the species' most distinctive characteristics. A dorsal fin is present in the rorquals but absent in right whales. In the genus Pontoporia the dorsal fin is well developed and falcate. The dorsal fin was relatively small, falcate, and obtusely terminated. I have scratched the dorsal fin of Tilikum to ease his itch under the curve of the dorsal fin. As an alternative, we use the furl of the dorsal fin as an indicator of relative calf age. His first dorsal fin is large and drawn out into a long filament. Richard and Russ were busy last week when they spotted a dorsal fin in the North Sea waters off Flamborough. Besides, unlike common varieties of fish, the length between the dorsal fin and the caudal fin of this fish is too short. The dorsal fin has a large spine with retrorse serrations behind. Show More Sentences Bowheads, like the closely related right whales, have enormous, bulldozer-like mouths and distinctively lack a dorsal fin. He shot off with the bait and his dorsal fin stuck out of the water. The first portion of the dorsal fin has also six flexible spines. Or if a float is used, the minnow may be hooked just under the dorsal fin. The soft rays of the dorsal fin are blue, with orange between. All humpback dolphins have a characteristic hump just below the dorsal fin, but there are several distinct species in this family of marine mammals, the scientists found. The device was successfully mounted on to the dorsal fin of the marine giant last month by the Irish Basking Shark Project near Malin Head in Co Donegal. Kidd could see the finger of the dial stand up dark against the sky like the dorsal fin of a shark and the vain moonlight clinging to that idle clock. Find more words! 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Words that rhyme with dorsal fin What is the plural of dorsal fin? Use our Sentence Generator Nearby Words dorsal Dors dors dorr Dorpat dorp dorsalgia dorsally dorse Dorset Dorsetshire dorsi