Assertion: manatee | /r/AtLocation | the surface
Facets:
value: to breathe
type: PURPOSE
value: for air
type: PURPOSE
value: during their resting period
type: TEMPORAL
value: regularly
type: TEMPORAL
value: generally
type: MANNER
value: usually
type: TEMPORAL
Source sentences:
text: They are able to stay submerged for up to 20 minutes, but usually come to the surface to breathe every three to five minutes.
text: Manatees can hold their breath for up to 20 minutes, but they generally go to the surface every 3-5 minutes to breath.
text: They spend most of their time is shallow water and come up to the surface regularly to breathe, therefore boat propellers can cause fatal injuries.
text: Since they have lungs and breathe atmospheric air, they need to come to the surface every 3-4 minutes when they swim actively.
text: It breathes through nostrils when it comes to the surface for air.
text: Manatees never leave the water but must come to the surface to breathe.
text: And while Manatee never leaves the water, it does have to come to the surface to breathe.
text: Manatees come to the surface to breathe on the the average of every three to five minutes.
text: Remember that a manatee coming to the surface is not doing so to play with you, but as matter of survival.
text: But it does make sense that manatees would exhibit unihemispheric sleep since they need to come to the surface every 20 minutes, requiring motor function and a wakeful state to do so.
text: They are able to go to the surface about three times an hour for air even during their resting period.