• brianorca@lemmy.worldEnglish
    6·
    2 months ago

    Blacktip Reef sharks, like some others such as great white and hammerhead, are “obligate ram ventilators” because forward movement is the only way they can push water over their gills. Nurse sharks and some others are able to close their mouth and pump water to the gills while stationary.

    • Viking_Hippie@lemmy.worldEnglish
      4·
      2 months ago

      obligate ram ventilators

      Sounds like someone who keeps goats cool as their court mandated community service 😄

      Perchance depiction: