There is no such thing as a "hypothermal" vent.
A food chain that starts without photosynthesis would involve organisms relying on chemosynthesis instead. For example, in deep ocean ecosystems near hydrothermal vents, chemosynthetic bacteria use chemicals from the vent fluids to produce energy, which is then consumed by other organisms in the food chain.
A single vent is down the middle A double vent has a vent near the sides
vent crab (bythograea thermydron )
The ultimate food source in the vent community is typically chemosynthetic bacteria. These bacteria convert chemicals such as hydrogen sulfide into energy through a process called chemosynthesis, which forms the base of the food chain in these extreme environments. Other organisms like giant tube worms and deep-sea crabs rely on these bacteria for nutrition.
Every food chain necessarily begins with an organism that doesn't eat any other organism (if it did eat another organism, it would not be the beginning of the food chain) which is technically known as an autotroph. We are generally familiar with organisms that conduct photosynthesis, although that is not the only kind of autotroph; there are also bacteria which metabolize minerals coming from underwater vents, which live symbiotically in vent worms.
They have a vent near the tail
no
The vent shaft is near the processing room. It's the vent right before the processing room.
Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart, ocean basins, and hotspots. Vent organisms depend on chemosynthetic bacteria for food. The water from the hydrothermal vent is rich in dissolved minerals and supports a large population of chemoautotrophic bacteria.
The sun is the ultimate source of energy for almost all organisms, as it drives photosynthesis in plants and algae, which are then consumed by other organisms in the food chain. Organisms living deep in the ocean near thermal vents rely on chemosynthesis, where bacteria convert chemicals from the vents into energy.
The air vent is typically located on the ceiling or near the floor inside a room.
The restroom air vent is typically located near the ceiling in the restroom of this building.