Rays

Mainly sharks, but killer whales (orca) too occasionally.

The entire surface of the body, also the inner surface of the coelenteron can sting; however, stinging cells are located mostly on tentacles and on oral arms.

Manta rays, as well as sharks, are members of a group of fish called elasmobronchs. This means that their entire skeleton is made of cartilage. Elasmobranchs are vertebrates (have a backbone -- made of cartilage).

Manta Rays lack a stinger in their tale, therefore they do not sting.

but from stories I've heard they can bite.

well sharks are not very smart, they have bad eye site but have the best sense of smell than all fish. example: you cut your foot on a sharp rock, its starts bleeding a shark may smell it 10000 miles away in the ocean. when sharks eat us or bite us they don't mean to, they possibly think your a seal because sharks think our blood tastes very bad when the swallow it they throw it up again. they think your a seal because your flopping your legs and arms everywhere so sharks are not that smart

Stingrays love the ocean floor. It's where they spend most of their life. Why? It's where they hunt and live. Sting rays especially like sand and muddy bottoms. They live pretty deep down, too. They can be as far down as 91 meters and as high as 22 meters.

They also like rocky coral reefs, such as the ones you can find in the Caribbean.

although mata rays have tails, they are NOT barbs, they are not poiseness nor electrical

Sting rays give birth to live young

It isn't. A stingray is a cartilaginous fish and thus a vertebrate.

Jawless fish are included in subphylum Vertebrata, but most jawless fish do not have whole vertebrae. Hagfish, for instance, do not have vertebrae at all, and lampreys have only reduced vertebrae. So, no, most jawless fish are not vertebrates.

I'm not sure about all species, but many can be, including the giant freshwater stingray in Thailand. South American stingrays are hunted by the natives as a food source.

I fried some and ate it yesterday. I was wonderful, little like shark.

I have never heard of people poaching manatees; mainly the problem is motor boats accidentally cutting them with their motors or people harassing them. If anyone were to poach them, I'd say it would be because they are endangered, and their skin would be very rare and probably valuable in the black market.

Due to the size of manta rays, their only predators are large sharks.

Dasyatis pastinaca

Yes, stingrays can pose a threat, and could possibly cause one to die. Apparently, they are "cousins" of the shark. It's well-known that a stingray was what caused the death of the "Crocodile Hunter" Steve Irwin. While sharks have very powerful bites, stingrays have a spiney "tail" and small mouths. How can they be so vicious? Well, the tail stiffens when a stingray feels threatened, and kind of like a serrated blade with a deadly mixture of venom, it can produce enough power to kill its predator. Typically, stingrays pose very little threat to humans unless stepped on. It would definitely be painful to get "stabbed" by the spine, yet ultimately the threat remains minimum for humans. Steve Irwin probably died when the stingray pierced his heart; a tragic way to end one's life, and very unfortunate that it happened like that.

Sea Lampreys (petromyzon marinus) also known as Great Sea Lamprey, Lake Lamprey, Lamprey Eel - is an invasive predator or parasite that feed on a wide range of salt and freshwater fish (herring, mackerel, salmon, and trout). It attached itself using its sucker type of mouth, using it rough tongue it creates a hole on the surface of the host, allowing it to suck the blood and body fluids. The saliva of the lamprey prevents the wound from clotting. The host fish is seriously wounded but often is the case it is killed immediately or will die from an infection from the wound.

Stingrays feel like wet rubber. They feel like they're slimy to touch but they actually don't have any slime on them.

These animals are predators, and they eat all types of invertebrates and also fish, that they catch near or upon the bottom of the ocean (or rivers, in the case of the few freshwater species).

If you look at the ventral side of a ray you'll see its mouth, which appears small and pretty harmless because they don't have sharp teeth like the sharks, but sets of rather flat plate-like teeth.

However, rays can protrude their mouth (i.e. extend it forward outside their body) markedly, and their jaws are quite strong. With those teeth they can crush the exoskeleton of molluscs and other "hard" animals, as well as softer worms and fish.

In addition, stingrays are not as benthonic (bottom-dwelling) as the skates (the ones without stings). They use their wing-like appendages to swim in the water column - some even jump off the water - and can hunt for their prey in all types of oceanic pelagic (=open water) environments.

Bear in mind that the largest of stingrays (the manta rays) are mostly planktophagous (they don't eat large prey, they filter small planktonic animals using special "rakes" situated in their gills).

basically,it depend on what species of the bats is.you can determine it by the morphollogy of the bats mouth,it's describe what they eat.just easy as A,B,C

The manta ray (Manta birostris) is the largest species of the rays. The largest known specimen was more than 7.6 metres (25 ft) across, with a weight of about 2,300 kilograms (5,100 lb). It ranges throughout tropical waters of the world, typically around coral reefs. They have the largest brain-to-body ratio of the sharks and rays.

Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage rather than bone. They are divided into two subclasses: Elasmobranchii (sharks, rays and skates) and Holocephali (chimaera, sometimes called ghost sharks).

If you want to yes. It is much better fresh. Just make sure your bag is tightly sealed with no air inside. It will last for months in the freezer, but when you thaw it out it wont taste as good as sashimi. You need to pan sear it or grill it and make ahi fish tacos!(My favorite)