Explore the ocean
by depth.
Follow the light. Then go beyond it.
A journey from the surface to the deepest blue.
The sunlight zone
0 — 200 m
The last
of the light.
Blue fades into blue. Here, sunlight becomes too faint for photosynthesis. The vampire squid lives in low-oxygen water, gathering drifting particles with two delicate filaments.
A world that
makes its own light.
No sunlight reaches these waters. A deep-sea anglerfish carries a lure lit by symbiotic bacteria. A tiny point of light becomes an invitation in the dark.
Life on a
different scale.
Near the seafloor, the bigfin squid holds its arms at extraordinary angles. Its long, delicate filaments can trail far below its body.
Further than
light can follow.
Ocean trenches descend beyond the abyss. The Mariana snailfish is known from roughly 6,900–8,000 m. Deeper still, invertebrate life inhabits the trench floor.
Move to reveal. Arrow keys work, too.
Illustrative light only. No fish are depicted at this depth.
A vast world.
Still being discovered.
Five zones. One connected ocean.
Field notes & sources +
This is an illustrated exhibition, not a live instrument. Zone boundaries are conventional and can vary by location. The journey shows representative organisms, not a single geographic transect. Illustrations are interpretive; specimen sizes in the comparison are stated reference lengths.
- NOAA Ocean Exploration — Light and depth zones ↗
- NOAA Fisheries — Green turtle ↗
- MBARI — Vampire squid: 600–900 m; up to 30 cm ↗
- MBARI — Deep-sea anglerfishes: 300–4,000 m ↗
- MBARI — Bigfin squid: 1,600–6,200 m; up to 6.4 m ↗
- Gerringer et al. (2017) — Pseudoliparis swirei, Zootaxa ↗
Pressure estimate: 1 + (1,025 kg/m³ × 9.81 m/s² × depth) / 101,325 Pa. Constant density approximation; not a measurement. No exact temperature or population claims are implied.