Aquatic Lifeforms - Rare Catches

Mantis Shrimp - This highly intelligent hunter with claws can lash out at prey with the force of a gunshot. Larger varieties have been known to shatter glass or sever human fingers. Most are either "spearers" (with sharp, mantidlike claws) or "smashers" (with blunt, clublike claws for cracking hard-shelled prey). Rare among invertebrates are the monogamous mating habits that several species demonstrate. Mated pairs share a burrow, and the male hunts for both his mate and young.


Lumpfish - The longest lumpfish so far recorded from the American coast measured 23 inches, and weighed 13 1/4 pounds; the heaviest weighed 20 pounds but measured only 21 1/2 inches (both from Orient, N. Y.), and the proportion of weight to length varies similarly in smaller fish.


Humpback Anglerfish - This black seadevil, of the size of a tennis ball, is one of the weirdest fish in the world. Female humpback anglers have an enormous head dominated by a cavernous mouth full of long slender teeth that can fold backwards when prey is being swallowed.


Source: http://mysterious-zone.blogspot.com/2009/05/27-aquatic-lifeforms-you-never-caught.html