Linked from
The 15 pages that link to Ram ventilation, each with the reason it gives.
SharkRelated: Some sharks rely on swimming to keep oxygenated water flowing over their gills.
Pelagic fishRelated: Some fast-swimming pelagic fish must keep moving to ventilate their gills.
Manta rayRelated: Forward swimming helps move oxygenated water across a manta ray’s gills.
Skipjack tunaRelated: Continuous swimming helps move oxygen-rich water across skipjack's gills.
MackerelRelated: Some fast-swimming mackerels rely on continuous movement to ventilate their gills.
Mahi-mahiRelated: As a fast swimmer, mahi-mahi can move water across its gills while moving forward.