They are distinguished by the presence of a long hook on the snout overhanging the mouth, and the absence of pectoral fins.

This motion is apparent of the gastrointestinal tract.

The anal fin and the bottom portion of the caudal fin are light brown to dark red.

They have a single dorsal fin, placed far back on the body, almost opposite to the anal fin.

The anal fin has two or three spines, and the pelvic fins one spine and five soft rays.

Here's a dolphin where the fin's been re attached.

The pelvic fin is anterior to the tail fin.

Experts also rule out syphilis, porphyria and pelvic deformation as incompatible with her medical history.

By contrast, most bony fish possess a homocercal caudal fin.

Waist hip ratio Waist hip ratio is the ratio of the circumference of the waist to that of the hips.

Meanwhile, the other characters are talking about shark fin soup.

Female residents characteristically have rounded dorsal fin tips that terminate in a sharp corner.

Their dorsal and anal fins are long and continuous, with the dorsal fin extending forward onto the head.

The tail is relatively short, laterally flattened, and surrounded by a thin fin.

The dorsal and pectoral fins each are supported by a sharp, slime covered barbed spine.

Shark finning involves removing the fin with a hot metal blade.

The caudal fin is strongly divided and rigid, with a slender, ridged base.

It has a curved, prominent dorsal fin that ranges in height from (usually ) and averages about , lying about three quarters of the way along the back.

Fishermen capture live sharks, fin them, and dump the finless animal back into the water.

When the whale surfaces, the dorsal fin is visible soon after the spout.

Members of the order have two dorsal fins, which usually possess spines, no anal fin or nictitating membrane, and five gill slits.

I've been fascinated for a lifetime by the beauty, form and function of giant bluefin tuna.

Narwhals do not have a dorsal fin, possibly an evolutionary adaptation to swimming easily under ice.

The caudal fin is separate, and the pectoral fins are rudimentary or entirely absent none of the fins has spines.

They have four toes on the fore limbs, and five on the hind limbs.

The blowholes and dorsal fin are often exposed above the water surface almost simultaneously.

This species has a slender, fusiform body with a narrow, pointed head.

Many frogs are able to absorb water and oxygen directly through the skin, especially around the pelvic area, but the permeability of a frog's skin can also result in water loss.

Complications are rare and can include uterine perforation, pelvic infection, and retained products of conception requiring a second procedure to evacuate.

The gray or white area around the dorsal fin, known as the saddle patch , often contains some black colouring in residents.

The bowfin is so named for its long, undulating dorsal fin consisting of 145 to 250 rays, and running from the middle of the back to the base of the tail.

I do three or four strips after that where we explore the finning issue and the shark fin soup issue.

Shark fin soup is a status symbol in Asian countries, and is considered healthy and full of nutrients.

And I'd like to switch now from this local, familiar, coastal environment to a much broader world of the baleen whales and the open ocean.

The Monodontidae are distinguished by medium size (at around in length), forehead melons (round sensory organs), short snouts, and the absence of a true dorsal fin.

Dorsal fin shape, pigmentation pattern, and scarring have been used to a limited extent in photo identification studies.

The Atlantic bluefin tuna is a close relative of the other two bluefin tuna species the Pacific bluefin tuna and the southern bluefin tuna.

It is immediately recognizable by its extremely small white eye patch, narrower and shorter than usual dorsal fin, bulbous head (similar to a pilot whale), and smaller teeth.

We brought patients in, six to eight weeks prior to their scheduled surgery, did X rays, and we then composed a scaffold specifically for that patient's size pelvic cavity.

As they turn toward us you'll see that the pelvic area of early australopithecines is a little flatter and doesn't have to rotate quite so much from side to side.

Male The male reproductive system is a series of organs located outside of the body and around the pelvis region of a male that contribute towards the reproduction process.

Female The human female reproductive system is a series of organs primarily located inside of the body and around the pelvic region of a female that contribute towards the reproductive process.

The posterior part of a male shark's pelvic fins are modified into a pair of intromittent organs called claspers, analogous to a mammalian penis, of which one is used to deliver sperm into the female.

The pubococcygeus muscle or PC muscle is a hammock like muscle, found in both sexes, that stretches from the pubic bone to the coccyx (tail bone) forming the floor of the pelvic cavity and supporting the pelvic organs.

Some are pelagic, while others are benthic some live in the deep sea (e.g., Ceratiidae) while others on the continental shelf (e.g., the frogfishes Antennariidae and the monkfish goosefish Lophiidae).