A new animal every day

This was Wednesday’s animal. Every day has its own page.

See today’s animal

Wednesday 7 October 2026

A dark fish in deep blue water. Its head is a clear dome with two green eyes inside.
Photo: Kim Reisenbichler · CC BY-SA 4.0 · iNaturalist

Pacific barreleye

Its head is see-through. The two dots above its mouth are for smelling. Its real eyes are the green domes inside.

Lives in
Deep seaThe North Pacific, 600 to 800 metres below the surface
More about the Pacific barreleyeScientific name, size and Red List status
Scientific name
Macropinna microstoma
Size
Up to 15 cm long
IUCN Red List
Not evaluated

The IUCN Red List has assessed 175,909 species. This one has not been assessed yet. What this means

Fact source: Johnsen & Haddock, 2022

This week

Every animal so far
  1. Mon 5Thorny devil
  2. Tue 6Golden tortoise beetle
  3. Wed 7Pacific barreleyeViewing
  4. Thu 8Okapi
  5. Fri 9KeaToday
  6. Sat 10Tomorrow’s animalin 19 h 46 min
  7. Sun 11

Why Animall

People can’t care about animals they have never heard of.

Scientists still discover thousands of new animal species every year, while many others are disappearing because of habitat loss and climate change. Some die out before anyone has described them.

10,000+

new animal species are described every year.

University of Arizona, 2025

86%

of species on Earth, and 91% in the ocean, have not been described yet.

Mora et al., 2011

73%

average drop in monitored wildlife populations between 1970 and 2020.

WWF Living Planet Report, 2024