Head to head
Vent Barnacle vs Vent Limpet
Vent Barnacle
VS Vent Limpet
Both animals are among the first colonisers of a newly formed hydrothermal vent, but they belong to entirely different groups and gather food in different ways.
| Vent Barnacle | Vent Limpet | |
|---|---|---|
| Scientific name | Neolepas zevinae | Lepetodrilus |
| Animal type | A crustacean (barnacle) | A gastropod (a type of snail) |
| Feeding method | Filters bacteria and particles from vent water | Grazes on bacterial mats coating vent surfaces |
| Mobility | Permanently attached to a hard surface | Can move slowly while grazing |
| Shell or covering | Plated shell typical of barnacles | A simple, cone-shaped shell |
| Role at a new vent | An early filter-feeding coloniser | An early grazing coloniser |
| Conservation status | Not Evaluated | Not Evaluated |
| Habitat | Ocean | Ocean |
Vent Barnacle vs Vent Limpet: common questions
Which one is a crustacean and which is a gastropod?
The vent barnacle is a crustacean, while the vent limpet is a gastropod, a type of snail, despite both being among the earliest animals to colonise a newly formed hydrothermal vent.
Which one filters food from the water rather than grazing?
The vent barnacle filters bacteria and particles directly from the water flowing out of a vent, while the vent limpet instead grazes on bacterial mats growing across vent surfaces.
Which one can move around more freely?
The vent limpet can move slowly across vent surfaces while grazing, while the vent barnacle remains permanently attached to a hard surface for its entire adult life.