Sea lions are seals
The topic should be self explanatory.
First round: Acceptance only.
Final round: Rebuttals only. No new arguments.
You flake, you lose.
You troll, you lose.
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.
"Encyclopedia Britannica 
any of 32 species of web-footed aquatic mammals that live chiefly in cold seas and whose body shape, round at the middle and tapered at the ends, is adapted to swift and graceful swimming. There are two types of seals: the earless, or true, seals (family Phocidae); and the eared seals (family Otariidae), which comprise the sea lions and fur seals."
The family difference should be enough to settle this. In taxonomy, the family is the third-lowest rung on the taxonomy ladder, per se. A family can split into many genera-the most notable examples of this are the harbor seal (Phoca vitulina), the Hawaiian Monk seal (Monachus schauinslandi), and the Northern Elephant seal (Mirounga angustirostris). Furthermore, according to the National Oceanic and Atmospheric Association (NOAA), while seals and sea lions both belong to the order Pinnipedia, they are indeed different animals.
"Oxford Dictionary 
A fish-eating aquatic mammal with a streamlined body and feet developed as flippers, returning to land to breed or rest. Families Phocidae (the true seals) and Otariidae (the eared seals, including the fur seals and sea lions). The latter have external ear flaps and are able to sit upright, and the males are much larger than the females."
Please refer to the last sentence in this definition. It states that the latter (Otariidae) have external ear flaps and are able to sit upright, with the males being much larger than the females. Three crucial differences were stated in that sentence alone.
"American Heritage Dictionary 
Any of various aquatic carnivorous mammals of the families Phocidae and Otariidae, found chiefly in cold regions and having a sleek torpedo-shaped body and limbs that are modified into paddlelike flippers."
According to the New World Encyclopedia, family Phocidae are also known as "earless seals". In my previous argument, I said that the family Otariidae possesses external ear flaps-a fact so basic that looking up images of "Otariidae seals" will prove it-as well as a search of Phocidae seals. This is a crucial difference-and if sea lions belong to family Otariidae, then this, if anything, must prove that sea lions are definitely not seals.
"Collins Dictionary 
any of two families (Otariidae and Phocidae) of sea carnivores with a doglike head, a torpedo-shaped body, and four webbed feet or flippers: they live in cold or temperate waters and usually eat fish see also eared seal, earless seal."
This time, the dictionary goes on to say "see also eared seal, earless seal.", acknowledging their differences. While the two animals are very much similar (carnivores, doglike head, torpedo-shaped body, four webbed feet or flippers), the difference in the presence of ears within the two families is the chief difference.
I have said what has needed to be said about this topic and I await your response.
Con’s argues that sea lions do not count as seals because sea lions are of the taxonomic family Otariidae as opposed to the taxonomic family Phocidae. Con states that “if sea lions belong to family Otariidae, then this, if anything, must prove that sea lions are definitely not seals.” Con elaborates on many of the differences between the taxonomic families Phocidae and Otariidae.
Yet, Con provides no dictionary or encyclopedia reference to support his assertion that species of the family Otariidae don’t count as seals; nor does Con dispute any of the provided definitions for the word “seal”. All of these definitions are explicitly inclusive of both Phocidae and Otariidae. It doesn’t matter that there are differences between the taxonomic families Phocidae and Otariidae. Of course there are differences, but this doesn’t lead to the conclusion that species of the family Otariidae are not seals. Con’s contention that species of the family Otariidae don’t count as seals flies in the face of every dictionary definition and encyclopedic reference provided Additionally, there are many species of the family Otariidae that even have the word “seal” as part of the species name:
If Con’s argument is that sea lions are not seals because they are of the family Otariidae, then Con must also assert that the Antarctic fur seal, Galapagos fur seal, New Zealand fur seal, brown fur seal, and northern fur seal are not seals.
Con states that seals and sea lions are different animals according to the NOAA, but doesn’t provide a web-link or some other way for us to evaluate his source. Con’s reference to the NOAA should be disregarded because Con did not provide us with enough information to verify his claim.
PlagueDoctor forfeited this round.
This debate is over. Con has lost this debate pursuant to this rule:
You flake, you lose. (See round 1 rules)
PlagueDoctor forfeited this round.
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