4 photos - 1 species
They are not fish, I know, but they are also in the sea, so I think they belong here too.
Introduction
There are around 56 species
Due to their marine lifestyle, they differ significantly from other snakes in some characteristics.
The most conspicuous visible feature is the laterally flattened tail,
which is common to all sea snakes
and is used for better locomotion in the water.
They grow to between 1.2 and 1.4 metres in length,
although some species can grow to well over 2 metres.
Laticauda colubrina
Yellow-lipped sea krait, Banded sea krait or Colubrine sea krait
Maximum length 120 cm
Depth: 0 - 200 m
Dive for at least 30 minutes
They mostly eat fish, especially bottom-dwelling species such as gobies and pipe eels.
If you leave them alone, you need have no fear of a bite.
Photos 1 - 2 Johnny: Lembeh Strait North Sulawesi
Photos 3 - 4 Johnny: Moalboal Philippines