Thrashing Seaswimmer: Difference between revisions

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The '''thrashing seaswimmer''' has split from the the [[Speartooth Seaswimmer|speartooth seaswimmer]]. Akin to other descendants of the speartooth seaswimmer, it is now fully aquatic, as it now rests one half of its brain at a time in the water, in addition to giving birth in the water. Stemming from this transition, it has now assumed an actively pelagic lifestyle, both in hunting fast-moving prey and in charging into shoals of small prey items in the sunlit zone up to 20 cm or smaller in length. In addition to an increasingly fusiform body, its caudal fin became heart-shaped, increasing propulsion. Two dermal ridges evolved on the lower sides, acting as keels for stability. Further enhancing its speed is the flattening of the stalked nostrils, as well as as of the two pairs of smaller dorsal eyes, reducing drag.

The '''thrashing seaswimmer''' has split from the the [[Speartooth Seaswimmer|speartooth seaswimmer]]. Akin to other descendants of the speartooth seaswimmer, it is now fully aquatic, as it now rests one half of its brain at a time in the water, in addition to giving birth in the water. Stemming from this transition, it has now assumed an actively pelagic lifestyle, both in hunting fast-moving prey and in charging into shoals of small prey items in the sunlit zone up to 20 cm or smaller in length. In addition to an increasingly fusiform body, its caudal fin became heart-shaped, increasing propulsion. Two dermal ridges evolved on the lower sides, acting as keels for stability. Further enhancing its speed is the flattening of the stalked nostrils, as well as as of the two pairs of smaller dorsal eyes, reducing drag.

This species owes its name to a novel hunting strategy it employs. First, it looks out for groups or congregations of organisms like [[Diamond Pumpgill|diamond pumpgills]], [[krillpedes]] or [[miniswarmers]] with its large lateral eyes as it swims. Then, moving towards the targeted group, it charges into it, thrashing about, wielding a long, pointy tooth that stuns, shears or impales prey. The incapacitated prey is then suctioned into its mouth.

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-The '''thrashing seaswimmer''' has split from the the [[Speartooth Seaswimmer|speartooth seaswimmer]]. Akin to other descendants of the speartooth seaswimmer, it is now fully aquatic, as it now rests one half of its brain at a time in the water, in addition to giving birth in the water. Stemming from this transition, it has now assumed an actively pelagic lifestyle, both in hunting fast-moving prey and in charging into shoals of small prey items in the sunlit zone up to 20 cm or smaller in length. In addition to an increasingly fusiform body, its caudal fin became heart-shaped, increasing propulsion. Two dermal ridges evolved on the lower sides, acting as keels for stability. Further enhancing its speed is the flattening of the stalked nostrils, as well as as of the two pairs of smaller dorsal eyes, reducing drag.
+The '''thrashing seaswimmer''' has split from the the [[Speartooth Seaswimmer|speartooth seaswimmer]]. Akin to other descendants of the speartooth seaswimmer, it is now fully aquatic, as it now rests one half of its brain at a time in the water, in addition to giving birth in the water. Stemming from this transition, it has now assumed an actively pelagic lifestyle, both in hunting fast-moving prey and in charging into shoals of small prey items in the sunlit zone up to 20&nbsp;cm or smaller in length. In addition to an increasingly fusiform body, its caudal fin became heart-shaped, increasing propulsion. Two dermal ridges evolved on the lower sides, acting as keels for stability. Further enhancing its speed is the flattening of the stalked nostrils, as well as as of the two pairs of smaller dorsal eyes, reducing drag.
 This species owes its name to a novel hunting strategy it employs. First, it looks out for groups or congregations of organisms like [[Diamond Pumpgill|diamond pumpgills]], [[krillpedes]] or [[miniswarmers]] with its large lateral eyes as it swims. Then, moving towards the targeted group, it charges into it, thrashing about, wielding a long, pointy tooth that stuns, shears or impales prey. The incapacitated prey is then suctioned into its mouth.

Thrashing Seaswimmer: Difference between revisions

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