Reading path: Coastal field methods →
Describe the colony as seen
Begin with visible form rather than a species name. Note whether the growth appears branching, tufted, thread-like, or encrusting, and describe its approximate extent. If you cannot distinguish individual polyps or structures, say so. A field description should preserve what the observer could actually resolve.
Include the substrate: for example, attached to kelp, rock, shell, or another organism. If the attachment point is hidden, mark that limit. The substrate can be important context for revisiting the observation, but it should not be used alone to claim an identification.
Place the observation precisely
Record the date, time, site, and position in a way that another observer could use. Depending on the field setting, this might mean pool name and shoreward edge, transect number, depth, or distance from a recognizable feature. State whether position or depth was measured or estimated.
For instance: “CW03, outer pool, shaded vertical face, approximately 0.4 m below the waterline at low-water visit.” That description gives useful spatial context without pretending to be a surveyed coordinate. If the note concerns a colony within a larger survey area, include the transect or quadrat reference as well.
Link photographs and confidence
Record image filenames and whether each frame shows scale, attachment, and the colony’s overall shape. A close photograph may reveal fine details but lose the surrounding substrate; a wider frame may provide context but not resolve small structures. Note which view supports which part of the description.
State identification confidence and the reason for it. “Hydrozoan, likely; branching colony visible, diagnostic details not resolved” is more informative than a bare label. If a later expert review is needed, keep the field description and image references together so the evidence can be assessed without relying on memory.
Preserve a useful follow-up
Add what would improve interpretation on a future visit, such as a closer image under steady light or a view of the colony’s attachment. Do not disturb an organism or collect material unless the work is permitted and appropriate to the project. A notebook can identify an evidence gap without prescribing an intervention.
Well-anchored notes help distinguish a repeated observation from a new one and make cautious comparison possible. Form, substrate, position, date, image, and confidence together create a record that remains useful beyond the moment of discovery.
Have a correction or a source to suggest? Send a note →