Scientific name............Dalatias Licha
Other common names.......Kitefin shark and Black shark
The Seal shark is a medium-sized cylindrical brown to blackish shark
with a short blunt snout, thick fringed lips. Spineless dorsal fins,
first originates behind pectoral fin rear tips with base closer to
pectoral than pelvic fin bases, second larger. Weak ventral caudal
fin lobe. Posterior margins of most fins are translucent.
This shark is born at a length of 11.8 inches and attains a maximum
length of 5.2 feet. Females mature 3.9 feet and males mature at 3.2
The color of Seal sharks are greyish, brown or brownish-black.
They feed mainly on deepwater fishes, may take bites out of large
live prey, the young feed more on cephalopods.
This shark is thought to be a solitary species. Hovers above bottom
( large-filled liver provides neutral buoyancy )and swims well off
Atlantic, Indian and Pacific Oceans. This species is a deep-water
shark found mainly in warm-temperate and tropical outer continental
and insular shelves and slopes, usually on or near bottom in depths
from (121 to 5,905 feet ) mainly at 660 feet.
Little is known of this sharks biology, they are ovoviviparous
giving birth to 10 to 16 pups per litter.
Data Deficient. This shark has long been exploited commercially.
Among products derived from it were or are: denticle-intact shin for
use as "shagreen" for polishing in cabinet and jewellery making,
fishmeal, leather ( considered excellent for the manufacture of "boroso",
a durable, almost armor-like denticle-intact polished leather in
Spain ), human consumption ( eastern Atlantic and Japan), and
squalene oil ( Portugal and Japan ). May deplete populations