Krill Swarm Sandbox

Total biomass

Whole-area density

Abundance

Mean krill TL

Swarms

Drag to rotate, scroll to zoom. Each swarm is a block of 1 m cubes coloured white (low) to red (high) density; near-empty cubes are hidden. Large fields are auto-coarsened for the web.

Save the generated swarm field (.rds) or the swarm table (.csv).

Field (.rds) Swarm table (.csv)

Abstract 1000 x 1000 x 200 m volume, no geography. Pick a build mode, set parameters, and generate a swarm field. Defaults are the coastal literature priors.

Build mode

Total biomass (tonnes)

Mean column density (g/m2)

SD column density (g/m2)

Number of swarms

Random seed

Survey & grid

Grid cell (m)

Depth bin (m)

Transects

Segment (m)

Swarm parameter overrides

For the characteristics mode these define the distributions; for the biomass / column-density modes they shape the field before it is scaled to your target.

Swarm geometry (m)

Length mean

Length SD

Width mean

Width SD

Height mean

Height SD

Centre depth mean

Centre depth SD

Density & krill length

Density mean (g/m3)

Density SD (g/m3)

Krill mean TL (mm)

Krill TL SD (mm)