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The flukes ( lobes of the tail ) and dorsal fin are formed of dense connective tissue and do not contain bone or muscle.
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flukes and tail
A blue whale lifting its tail flukes
The tail has horizontal flukes.
They then slap the ball with their tail flukes, either stunning or killing up to 10 – 15 fish at a time.
All Cetacea have forelimbs modified as fins, a tail with horizontal flukes, and nasal openings ( blowholes ) on top of the head.
The end of the tail is composed of two flukes, which propel the animal by vertical movement, as opposed to the horizontal movement of a fish tail.
The dugong's tail flukes and flippers are similar to those of dolphins.
Marine mammals have developed a number of features for efficient locomotion such as torpedo shaped bodies to reduce drag ; modified limbs for propulsion and steering ; tail flukes and dorsal fins for propulsion and balance.
Such CCHE systems are made up of a complex network of peri-arterial venous plexuses that run from the heart and through the blubber to peripheral sites ( i. e. the tail flukes, dorsal fin and pectoral fins ).
The broad, centrally notched tail flukes never break the surface.
The pectoral fins are considerably small and the tail flukes have a well-defined median notch.
The tail flukes are triangular and, like the flippers, pointed.
The flippers are small and slender ; the broad, centrally notched tail flukes never break the surface.
He has a pointed beak, a tail with fins or flukes, grey skin and wears green armor.
flukes and dorsal
The gray whale also lacks a dorsal fin, instead bearing 6 to 12 dorsal crenulations (" knuckles "), which are raised bumps on the midline of its rear quarter, leading to the flukes.
These whales have an erect, curved, pointed, " falcate " dorsal fin located far down its back and broad flukes.
The back and sides are predominantly light grey, while the dorsal fin, flippers and flukes are black.
Some populations of spinner dolphin found in the eastern Pacific have bizarre backwards facing dorsal fins, and males with strange humps and upturned caudal flukes.
flukes and are
At one end of the shank there are two arms, carrying the flukes, while the stock is mounted to the other end, at ninety degrees to the arms.
In contrast to the elaborate stowage procedures for earlier anchors, stockless anchors are simply hauled up until they rest with the shank inside the hawsepipes, and the flukes against the hull ( or inside a recess in the hull ).
While there are numerous variations, stockless anchors consist of a set of heavy flukes connected by a pivot or ball and socket joint to a shank.
It uses a stock at the crown to which two large flat triangular flukes are attached.
Surviving examples have a variety of head forms but there are two main variants, one with the side blades ( known as flukes or wings ) branching from the neck of the central blade at 45 degrees, the other with hooked blades curving back towards the haft.
The foregoing strategies are used, variously, by larval stages of tapeworms, thorny-headed worms, flukes and parasitic roundworms.
These flukes are raised up and down in long strokes to move the animal forward, and can be twisted to turn.
The trematodes or flukes are estimated to include 18, 000 to 24, 000 species, and are divided into two subclasses.
Trematodes are commonly referred to as flukes.
Their flukes are small with a notch in the middle and concave trailing edges.
Distomes are flukes with an oral sucker and a ventral sucker, but the ventral sucker is somewhere other than posterior.
Usually two testes are present, but some flukes can have more than 100.
If infected water plants are consumed raw or undercooked, the flukes can infect pigs, humans and other animals.
Adult flukes of both species are localized in the bile ducts of the liver or gallbladder.
As a result of this unclear classification, flukes in Japan are normally referred to as Fasciola spp.
During the migration of flukes, tissues are mechanically destroyed and inflammation appears around migratory tracks of flukes.
flukes and tissue
Occasionally, ectopic locations of flukes such as the lungs, diaphragm, intestinal wall, kidneys, and subcutaneous tissue can occur.
This phase is a result of mechanical destruction of the hepatic tissue and the peritoneum by migrating juvenile flukes causing localized and or generalized toxic and allergic reactions.
Occasionally, flukes invade the mucosa and eggs deposited in tissue may gain access to circulation.
Juvenile flukes penetrate the Glisson ’ s capsule of the liver and continue migrating in the liver tissue.
flukes and do
When submerging, these whales do not display their flukes.
In these organs, however, flukes do not survive and not attain maturity.
flukes and .
Modern anchors for smaller vessels have metal flukes which hook on to rocks on the bottom or bury themselves in soft bottoms.
Iron was afterwards introduced for the construction of anchors, and an improvement was made by forming them with teeth, or " flukes ", to fasten themselves into the bottom.
As a strain comes onto the rode, the stock will dig into the bottom, canting the anchor until one of the flukes catches and digs into the bottom.
Cast into the crown of the anchor is a set of tripping palms, projections that drag on the bottom, forcing the main flukes to dig in.
Designed by famous yacht designer L. Francis Herreshoff, this is essentially the same pattern as an admiralty anchor, albeit with small diamond shaped flukes or palms.
Tripping palms at the crown act to tip the flukes into the seabed.
* The Bulwagga is a unique design featuring three flukes instead of the usual two.
Strabo makes him the ( probably legendary ) inventor of the anchor with two flukes, and others made him the inventor of the potter's wheel.
Pods of female sperm whales sometimes protect themselves by forming a protective circle around their calves with their flukes facing outwards, using them to repel the attackers.
Cestodes ( tapeworms ) and trematodes ( flukes ) have complex life-cycles, with mature stages that live as parasites in the digestive systems of fish or land vertebrates, and intermediate stages that infest secondary hosts.
* The Greeks invent the Anchor with flukes.
Classic examples of parasitism include interactions between vertebrate hosts and diverse animals such as tapeworms, flukes, the Plasmodium species, and fleas.
Adult stages of tapeworms, thorny-headed worms and most flukes use this method.
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