Sea lions are seals
The topic should be self explanatory.
First round: Acceptance only.
Final round: Rebuttals only. No new arguments.
Pro and Con shall not plagiarize, but may reuse their own work.
You flake, you lose.
You troll, you lose.
Enough with the formalities - let battle commence...
P1 - Any organism of the taxonomic family Phocidae or Otariidae is a seal.
P2 - All sea lions are organisms of the taxonomic family Otariidae.
C1 - Therefore, all sea lions are seals.
This argument is valid. If the premises are true, then the conclusion must be true.
* "P" is an abbreviation for "premise" and "C" is an abbreviation for "conclusion".
Support for P1 -
Support for P1 comes in the form of encyclopedic and dictionary entries for the word "seal". These references are reputable, sufficiently numerous, and are inclusive of the taxonomic families mentioned in P1. The family names have been emphasized.
Support for P2 -
Support for P2 comes in the form of encyclopedic and dictionary entries for the term "sea lion." These references are reputable, sufficiently numerous, and demonstrate that sea lion species are of the family Otariidae, which is also referred to as "eared seals."  "Otariidae" and/or "eared seal" have been emphasized.
1 - http://www.britannica.com...
P2: Animals vary between their shape, size, look and doing
P3: Different names = different organisms (no matter how close they are in a family)
C1: Seals and Sea Lions are not the same mammals
This argument is valid. If the premise is correct, so too is the conclusion.
Support for P1 & P2:
Seals' furry, generally stubby front feet " thinly webbed flippers, actually, with a claw on each small toe " seem petite in comparison to the mostly skin-covered, elongated fore flippers that sea lions possess.
Secondly, sea lions have small flaps for outer ears. The "earless" or "true" seals lack external ears altogether. You have to get very close to see the tiny holes on the sides of a seal"s sleek head.
Third, sea lions are noisy. Seals are quieter, vocalizing via soft grunts.
Fourth, while both species spend time both in and out of the water, seals are better adapted to live in the water than on land. Though their bodies can appear chubby, seals are generally smaller and more aquadynamic than sea lions. At the same time, their hind flippers angle backward and don't rotate. This makes them fast in the water but basic belly crawlers on terra firma.
Sea lions, on the other hand, are able to "walk" on land by rotating their hind flippers forward and underneath their big bodies. This is why they are more likely to be employed in aquaria and marine shows.
Finally, seals are less social than their sea-lion cousins. They spend more time in the water than sea lions do and often lead solitary lives in the wild, coming ashore together only once a year to meet and mate.
Sea lions congregate in gregarious groups called herds or rafts that can reach upwards of 1,500 individuals. It's common for scores of them to haul out together and loll about in the sand, comprising an amorphous pile in the noonday sun.
Support for P3:
This is common sense. Think of a family in which there are 2 children: Mary and John; although they are in the same family these two children are NOT each other. Mary is NOT John and John is NOT Mary. Now, these two are siblings but technically sea lions and seals are second cousins - FURTHER DISTANCING their relationship.
Thus I affirm my argument.
Death23 forfeited this round.
I would like to thank Pro and the audience for this oppertunity.
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