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Electroreceptors
Linked via "elasmobranchs"
Passive Electroreception (PRE): Detection of naturally occurring bioelectric fields generated by the resting metabolism of prey organisms (e.g., muscle ion pumps).
Active Electroreception (ARE): Detection of changes in the organism's own weak, self-generated electric field. This system is prominent in weakly electric fish, but certain elasmobranchs utilize a modified ARE system for detecting subtle shifts in near-field [hydrodynamic potentials](/entr… -
Electroreceptors
Linked via "elasmobranchs"
Monotremes
The platypus (Ornithorhynchus anatinus) utilizes electroreception housed within the sensitive mucous glands of its bill. These organs appear to be morphologically analogous to the ampullary structures of elasmobranchs, though derived from glandular tissue rather than placode ectoderm. Uniquely, platypus electroreception is coupled with mechanoreception; studies indicate that the sensory cells only become fully operational after the b…