Frequency signatures: Spotted Ratfish to Sterlet Sturgeon
Each card gives a species’ behavioural archetype, its frequency — how often it commits effort and how long each commitment lasts — and a waveform tracing that rhythm.
Frequency signatures
Each waveform traces one species’ working rhythm — where it spends effort, and where it waits. 2,327 species, A–Z; showing 1,993–2,016.
Spotted Ratfish
Wing-Finned Shell Crusher of the Mud
Gliding • Benthic • Crushing
Because it is built on slow gliding and crushing, it is a low-frequency system.
Spotted Salamander
First-Rain Run, Oxygenated Eggs
Buried • Unhurried • Long-lived
Fifty weeks of almost nothing and one night of everything make this a bimodal system, a low-frequency buried life punctuated by a high-frequency run.
Spotted Sharpnose Puffer
A Poison Borrowed, Not Made
Feeding across reef on invertebrates and algae • Accumulating tetrodotoxin produced by bacteria and passed along the food chain • Carrying it in the skin and organs and inflating when threatened
Since encounters recur, it operates as a mid-frequency system.
Spotted Trunkfish
A Rigid Bony Box That Sculls Slowly
Sculling • Probing • Armoured
Because the system is built on slow sculling and probing, it is a low-frequency system.
Spotted Turtle
Multi-Wetland Seasonal Circuit
Circuiting • Overwintering • Seasonal
Since activity is concentrated into part of the year and otherwise dormant, it is a low-frequency system.
Spotted Wobbegong
Seafloor Camouflage Spring
Flat • Hidden • Patient
That makes it a bimodal system with a dominant low-frequency camouflage mode and a structurally critical high-frequency strike mode.
Spotted Wood Owl
Silent-Approach Sound Fix
Perched • Listening • Motionless
That makes the owl a bimodal system: a very cheap listening state and one brief committed descent.
Spotted-tailed Quoll
Nape-Bite Arboreal Hunt
Ranging • Climbing • Nightly
Because returns come from repeated moderate kills across a wide nightly circuit, it is a mid-frequency system.
Springbok
Opened Dorsal Crest
Grazing • Herded • Watchful
That makes it a bimodal system: steady herd grazing and a short deliberately expensive declaration.
Springhare
Bounds Tethered to a Burrow
Bounding • Feeding • Returning
Repeated nightly loops make this a mid-frequency system.
Squirrel Monkey
A Large Troop Kept Together by Sound
Troop • Vocal • Restless
That makes it a high-frequency system: fast, noisy and continuously coordinated.
Squirrelfish
Red That Reads as Black
Wedged • Hidden • Daylight
That makes it a bimodal system: a hidden inactive day and an active low-light night.
Sri Lanka Frogmouth
Bark-Pattern Freeze Posture
Still • Matched • Sallying
Because the animal earns its living by spending almost nothing and committing only at arm's length, it is a low-frequency system.
Sri Lankan Elephant
Calls Below Our Hearing
Calls produced with a substantial part of their energy below the range of human hearing • Those low frequencies travelling far further than higher ones because long wavelengths pass around vegetation instead of being absorbed • Groups several kilometres apart coordinating movement, so animals that cannot see each other stay in contact across a landscape
Because exchanges unfold over minutes, it operates as a low-frequency system.
St Mark's Fly
Emerging Together for Two Weeks
Larvae developing through autumn and winter in soil and leaf litter and all reaching maturity together • Adults emerging within a narrow window in late April in numbers large enough to be conspicuous • Males hanging in swarms with legs dangling, the whole population mating and dying within a fortnight
Because the emergence is annual, it operates as a low-frequency system.
Stag Beetle
Lever-Jaw Grapple Lift
Contesting • Levering • Repeated
Because the system runs on repeated moderate contests at a steady tempo rather than on reserves or explosive strikes, it is a mid-frequency system.
Stalk-eyed Fly
Eyes on Long Stalks
Eyes and antennae carried at the ends of long lateral stalks projecting from the head • Newly emerged flies pumping air through those stalks to inflate them to full length while the cuticle is soft • Males facing one another and comparing spans directly, the shorter withdrawing without a fight
Because encounters recur, it operates as a low-frequency system.
Standardwing Bird-of-paradise
Shoulder-Standard Display Frame
Staged • Precise • Flashing
Because the whole system is built around fast, highly choreographed display bursts rather than slow endurance or steady cycling, this is a high-frequency performance mechanism.
Star-nosed Mole
Tactile Forage Array
Rapid • Contact-led • Sampling
Because the whole body plan, habitat choice, and foraging rhythm are built around nonstop, very fast tactile sampling instead of slow surveying, the star-nosed mole is a high-frequency system driven by rapid contact-led bursts of activity.
Stars and Stripes Pufferfish
A Continuously Growing Fused Beak
Four teeth fused into a heavy beak, two above and two below • Continuous growth of that beak throughout life • Crushing molluscs, urchins and coral so that the beak is worn back as fast as it grows
Because feeding events are discrete, it operates as a low-frequency system.
Steenbok
Burying Its Own Scent
Flattened • Scentless • Waiting
That makes it a bimodal system: concealment maintained in two senses at once, and a violent short escape.
Steller's Sea Eagle
Bill-Heavy Salmon Lift
Perched • Swooping • Seasonal
Because value comes from repeated modest efforts around a seasonal resource, it is a mid-frequency system.
Steppe Eagle
Covering Ground Without Flapping
Soaring • Wide • Opportunistic
That makes it a low-frequency system: economical, wide-ranging and opportunistic.
Sterlet Sturgeon
The Sturgeon That Breeds Young
Reaching sexual maturity in three to five years rather than the fifteen or twenty typical of the family • Staying small at around a metre instead of growing for decades • Completing generations fast enough to restock a river within a human working lifetime
Because generations still run over years, it operates as a low-frequency system.