Nature Field Guide
Greenish Keyhole Limpet
- Spanish name
- Lapa de agujero
- Scientific name
- Fissurella virescens
What Do Pico & Tati Think?
Look for the opening near the top of this cap-shaped shell.
Species overview
About the Greenish Keyhole Limpet
A keyhole limpet is a snail with a cap-shaped shell. The opening near the top provides a useful way to recognize its shell type. Other keyhole limpets can look similar, so the hole alone does not confirm the species.
Explorer activity: In a reference photograph, trace the outline and mark the top opening. Compare it with the giant false limpet without detaching either animal.
Your discovery notes: Record the date, place and habitat, then add a sketch or photograph. If you cannot confirm the species, label it “unidentified shell” and keep your observations.
Identification
Key Features of the Greenish Keyhole Limpet
Cap-shaped shell with an opening near the top.
Ribs radiate toward the edge.
An intact underside and species reference help with confirmation.
Habitat & range
Rocky coastal habitat.
Local observations
Pacific Costa Rica: Bahía Panamá study lists this species. This supports regional inclusion, not a confirmed Tamarindo Beach sighting.
When to observe
Tides and conditions affect visibility. Let an adult or local guide choose a safe observation time; this card does not promise a seasonal sighting.
Conservation & care
Observe and photograph shells where they are. Leave living animals, occupied shells and empty shells in place. Do not pry animals from rocks, dig in mangroves or put fingers into shell openings. Explore with an adult or guide, follow site rules and stay clear of surf and slippery rocks.
Observation activity
In a reference photograph, trace the outline and mark the top opening. Compare it with the giant false limpet without detaching either animal.