(Late Latin: feeler, to feel; a flexible appendage serving as an organ for moving around or for touching)
One example of a bitentacle is the cuttlefish that has eight arms and two tentacles that have toothless suckers with which they grab and hold their prey.
Cells in the cnidarian tentacles and in the outer body surfaces are armed with stinging, harpoon-like structures called "nematocysts" which contain toxins that can cause their victims to have paralysis.2. Etymology: from Greek cnidaria, "nettle" and refers to the stinging structures that are characteristic of these animals.
When an octopus moves in the water from one place to another, it is the rear part of the body that goes first as its multitentacular body parts are used to propel it around.
Actually, octotentacle is a more accurate term than octopus, which means "eight feet", because it is obvious that octopi really do not have any feet; however, they do have eight tentacles.
Bigfin squids have huge wing-like fins extending from their mantle and very long, slender tentacles sticking stiffly out from their bodies, then bending at right angles and trailing downwards; which suggest that the bigfin waits for prey to blunder into them; and, although their bodies are less than half a meter long, the tentacles extend seven meters or more.
One of several deep-sea species that can swim using the elephant-ear-like fins on their heads, earning them the nickname "Dumbo" octopuses, have tentacles that are also connected by membranes, forming a bell and it has suckers that can be turned into bioluminescent organs that emit a blue-green light, possibly to lure prey.2. An elongated flexible unsegmented extension, as one of those surrounding the mouth or oral cavity of the squid, used for feeling, grasping, or moving around: Like octopi, squids also use their tentacles to help them move, feed, or hold onto things.
3. One of the sensitive glandular hairs or filaments on the leaves of insectivorous (insect-eating) plants, such as the sundew whose secretions trap and digest prey: Irwin noticed that if anything touches the tentacles on the leaves of the sundew plant, the leaves automatically close up, as if trying to capture whatever might be coming into contact with them.
4. A part or extension; especially, with respect to the ability to grasp, to influence, or to control: There was an espionage network with far-reaching tentacles.
Henry's cousin was caught in the tentacles of organized crime.
The neighborhood has been caught in the tentacles of narcotics.
Some tentacle feeders are anemones and corals that use various types of stinging, entrapping, and mucus-laden nematocysts, or specialized cells, that contain a barbed and threadlike tube that delivers paralyzing stings when they are sent into attackers or prey.
Tentacled snakes are sluggish and nocturnal, and they hunt by lying in weed-choked water, waiting for prey to swim by.
A female tentacled snake gives birth to 5-13 live young ones underwater.