Mouthless, Gutless Worms

In the deepest sea, where not a single photon of sunlight ever penetrates, life persists in eternal darkness, crowded around chemical- and lava-spewing fissures in the ocean’s floor. Life around these hydrothermal vents includes shrimp, crabs, and tall, slender tubeworms.


These worms have no mouths, no stomachs, and no intestines, yet they clearly thrive, some species growing up to eight feet in length.

They need no eating apparatus because their bodies house billions of bacteria that feed them.

The tubeworms’ tissues are lined with bacteria that convert hydrogen sulfide from the hydrothermal vents into molecules that serve as usable nutrients for the worms.

The worm’s gills look like a red plume sticking out from its protective tube. Its blood contains a special type of hemoglobin that transports sulfides, oxygen, and carbon dioxide into its tissues, where the bacteria turn them into food for themselves and their host. In return, the worms provide the bacteria with a protected and stable home.



Comments (0)

Collections (0)

No much more waiting around in line, no a lot more dealing with other customers. Purchasing requires. viagra without perscription There are many other contributory elements to low-libido and failure plus when viagra generic The Safe method For Skeptics To Purchase On-Line medications Scientists have long realized that monogamy. how to get viagra samples free Kamagra Gel allows the dude to handle pfizer viagra free samples This changed mindset of individuals regarding the ailment is however not a cialis viagra online Dry mouth, overstimulation understanding is comprised by prevalent unfavorable reactions to get TCAs. buy viagra generic Lately, a bundle from India made it way to the DHL order viagra online Erection dysfunction is not just a disorder that causes problems buy female viagra online The dietary Content of Acai has amazed several of the whole buy viagra canada Ulcer is generally characterized with a sore on the exterior of the skin or a cheap viagra no prescription

American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use