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Manatees (/ ˈ m æ n ə t iː z /, family Trichechidae, genus Trichechus) are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows.There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee (Trichechus inunguis), the West Indian manatee (Trichechus manatus), and the West ...
Instead of hind limbs, the manatee has a spatula-like paddle for propulsion in the water. Manatees have evolved streamlined bodies which lack external ear flaps, thus decreasing resistance in the aquatic environment. Pelage cover is sparsely distributed across the body, which may play a role in reducing the build-up of algae on their thick skin.
In other species, males that are smaller than females have higher fitness. As such, many sex-specific morphological adaptations (for example, in Dytiscidae diving beetles, females have setose dorsal furrows that males do not and males have suction cups on their forelegs that females do not [18]) are sexual dimorphisms caused by sexual coercion.
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The teen remained swimming in the lake while all her friends were already on the boat and they were watching in shock when they saw their friend freaking out.
Manatees can also inhale these brevotoxins from the surface of the water as they come up for air, leading to respiratory symptoms and even drowning. [75] Manatee die-offs from exposure to red tide toxins were recorded by the Florida Fish and Wildlife Conservation Commission in southwest Florida in 2002, 2003, 2005, 2007, and 2013.
Manatees may become stranded or injured by debris during hurricanes. In years past, they have been discovered after hurricanes in a dry bay , in a golf course pond and a retention pond .
Some behaviors of African manatees provoke humans to hunt them. When manatees become tangled in fishing nets, they can damage them. People in countries such as Sierra Leone believe that killing the manatees to reduce the species size lowers the chances of the fishing nets requiring expensive repairs. In addition, African manatees can destroy ...