A team of researchers documenting the deep sea off the coast of Argentina captured rare footage of a jellyfish “that can grow as long as a school bus,” and said they may have discovered dozens of new ...

Half of Earth’s oceans are more than 3.2km deep. Beneath them lie cavernous plains untouched by sunlight, vast gaping trenches made by Earth’s tectonic plates shifting, and ranges of underwater ...

Scientists spotted a rare jellyfish with huge ribbon-like arms deep in the ocean, where dozens of possible new sea species ...

A rare giant phantom jellyfish spotted off Argentina’s coast has become one of the most striking discoveries from a new deep‑sea expedition. The sighting occurred during an Argentinian‑led mission ...

Scientists have filmed a live colossal squid for the first time. This happened in March 2025 during an expedition in the ...

Dive in and meet some of the most stunning deep-sea animals that MBARI encountered in 2025. This year, our team spotted ultra-black fishes, sinuous siphonophores, curious crabs, spectacular sponges, ...

Humans have been exploring the deep seas, which make up 66 percent of our planet’s surface, for decades. But a new study reveals just how far we have left to go in understanding the mysterious ...