5 Nearly Immortal Sea Creatures: Meet the Ocean's Ageless Wonders

Did you know some sea animals can live for centuries with no signs of aging? Meet five incredible creatures that exhibit negligible senescence.

Greenland Shark • Lifespan: ~400 years  • Slow growth & low metabolism • Found in cold, deep waters

Image credit: nationalgeographic

Ocean Quahog • Lifespan: ~500 years  • Slow-growing shell hides age  • Oldest known specimen: 507 years

Bowhead Whale  • Lifespan: ~200 years  • Slow metabolism & thick blubber  • Oldest known mammal

Turritopsis Dohrnii (Immortal Jellyfish) • Biologically immortal  • Reverts to polyp stage when stressed  • Small, transparent, & hard to study

Koi Fish • Lifespan: ~200 years in ideal conditions  • Domesticated carp with varied colors  • Popular in ornamental ponds

Explore the Deep! Learn more about these ageless wonders and their remarkable adaptations. Dive into ocean documentaries, books, and research to uncover more secrets!