4h ago · The daily matchup
Ocean Sunfish vs Peacock Spider: The Biggest Doofus in the Sea Meets a 5mm Disco Ball
A two-ton fish that looks like a head that gave up, versus a spider the size of a grain of rice that dances for its life. Scale is meaningless here.
By someone who loves to compare irrelevant things · 4 min read
🐠Ocean Sunfish
Mola mola
The heaviest bony fish alive, shaped like a head that quit halfway.
- CoolSize: The heaviest bony fish on Earth, topping 2,000 kg
- WeirdBody: Almost no tail; it looks like the front half of a much larger fish
- GrossPassengers: A floating parasite hotel that surfaces so birds will pick it clean
🕷Peacock Spider
Maratus volans
A 5mm jumping spider with a built-in rainbow rave.
- CoolDisplay: Flips up an iridescent rainbow flap and waves its legs in a courtship dance
- WeirdSize: About 5 mm long; the whole show fits on a fingernail
- GrossStakes: If the female is unimpressed, she may eat the dancer
Today's matchup has a 5,000x weight difference and somehow the little one is more intimidating. A giant bony blob that sunbathes at the surface, against a tiny arachnid with a built-in rave.
The contenders
One is the heaviest bony fish on Earth. The other could sit on your fingernail with room to spare. Naturally, we must rank them.
Round 1: Cool
The peacock spider male flips up a flap of iridescent rainbow scales on his abdomen and waves his legs in a full courtship dance. It is, frame for frame, the most extra animal alive. The ocean sunfish counters by being a fish the size of a small car.
Round 2: Weird
The sunfish looks like someone built half a fish and called it a day, because it basically is: it has almost no tail. It also lays up to 300 million eggs at once and likes to bask on its side at the surface. And you know what they say: never measure a fight in kilograms.
Round 3: Gross
The sunfish is a floating parasite hotel; it visits the surface partly so seabirds and cleaner fish will pick the freeloaders off. The spider's risk is more personal: if the female is unimpressed by the dance, she may simply eat the performer.
And the winner is...
🕷 Peacock Spider
The ocean sunfish is the more impressive number on paper: heaviest bony fish, millions of eggs, the silhouette of a swimming dinner plate. But cool, weird, and gross is the bracket, and a 5mm spider that risks being eaten to perform an iridescent leg-waving rave is simply doing more with less. The peacock spider wins. Respect the disco.
Questions you're too polite to ask
- Is the ocean sunfish really the heaviest bony fish?
- Yes. Adult Mola species are the heaviest bony fish known, with large individuals reaching over 2,000 kg. Sharks and rays get heavier, but they are cartilaginous, not bony.
- Why does the male peacock spider dance?
- It is courtship. The male raises a colorful abdominal flap and waves his third pair of legs to win over a female. If she is not impressed, she may attack or eat him, so the stakes are real.
Taxonomy & tags
Where the facts came from
- Ocean sunfish - Wikipedia
- Maratus volans (peacock spider) - Wikipedia
The peanut gallery
0 comments