Ocean
The vast underwater world where marine animals like whales, dolphins, sharks, and fish live.
Giant oceanic manta ray
Giant oceanic manta ray
Scientific Name
Mobula birostris
Weight LB
6600 Lbs
Average Life Span
20 years
Fact
Manta rays are giant, gentle filter-feeders with unique belly spots like fingerprints, the largest brain-to-body ratio of any fish, and the ability to "fly" out of the water, performing incredible acrobatics despite their massive size (wingspans up to 29 feet!). They constantly swim to breathe and feed on plankton, visiting "cleaning stations" for hygiene and displaying high intelligence, including recognizing themselves in mirrors.
Weight KG
3000 kg
Country
Australia
Continent
Oceania
Type
Fish
Diet
Carnivore
Conservation Status
Vulnerable
Region
Australia
Giant Pacific Octopus
Giant Pacific Octopus
Scientific Name
Enteroctopus dofleini
Weight LB
33–110 lb
Average Life Span
3–5 years
Fact
The Giant Pacific Octopus (Enteroctopus dofleini) is incredibly smart, capable of solving mazes and opening jars, but also has three hearts, blue blood (due to copper), and arms with their own mini-brains, allowing them to multitask; a female's life ends in selfless dedication as she starves to death guarding her massive egg clutch, from which only a few hatchlings survive, notes SeaDoc Society, OctoNation - The Largest Octopus Fan Club!, Hastings Aquarium, and explore . adventure . discover.
Weight KG
15–50 kg
Country
United States
Continent
North America
Type
cephalopod, Mollusk
Diet
Carnivore
Conservation Status
Least Concern
Region
Asia, North America
Great White Shark
Great White Shark
Scientific Name
Carcharodon carcharias
Weight LB
1,500–5,000 lb
Average Life Span
30–70 years
Fact
A fun fact about great white sharks is that they are partially warm-blooded, allowing them to maintain a body temperature warmer than the surrounding water, which helps them hunt faster in colder seas, and they possess a "sixth sense" (electroreception) to detect the electrical fields of prey, even those hiding in sand. They also have rows of serrated, triangular teeth that can reach nearly 7 inches, and their skin is covered in tiny scales that reduce drag for speed.
Weight KG
680–2,300 kg
Country
Australia
Continent
Oceania
Type
Fish
Diet
Carnivore
Conservation Status
Vulnerable
Region
Australia
Moon Jelly
Moon Jelly
Scientific Name
Aurelia aurita
Weight LB
0.2–0.4 lb
Average Life Span
Up to 1 year
Fact
Moon jellies are fascinating because they have no brain, heart, or blood, are 95% water, and have a multi-purpose opening that acts as a mouth and anus, but a fun fact is they can de-age and get younger during their life cycle, with their polyp stage surviving for decades waiting for the right conditions to become adult jellyfish.
Weight KG
0.1–0.2 kg
Country
Indonesia
Continent
Asia
Type
Cnidarian
Diet
Carnivore
Conservation Status
Not evaluated
Region
Asia, Australia, North America, Oceania, South America
Seahorse
Seahorse
Scientific Name
Hippocampus kuda
Weight LB
0.01–0.02 lb
Average Life Span
1–4 years
Fact
A fun fact about Hippocampus kuda (Spotted Seahorse) is that males get pregnant and give birth, carrying the eggs in a pouch until they release live young, and they often form monogamous pairs, performing courtship dances and changing colors to strengthen their bond. They are also poor swimmers, using their prehensile tails to cling to seagrass and ambush tiny prey with their tube-like snouts, needing to eat almost constantly to fuel their high metabolism.
Weight KG
0.005–0.01 kg
Country
Indonesia
Continent
Asia
Type
Fish
Diet
Carnivore
Conservation Status
Vulnerable
Region
Asia