Fish
Long-spined sea scorpion
Taurulus bubalis
How to spot it
Heavily armoured ambush predator with long head spines and a wide gape; matches the rock perfectly.
Usually seen at
5-24 m (median 9 m)
Size
Small (under 10 cm)
Habitat
Rocky crevice, Kelp
Behaviour
On bottom, Hiding
Where it's seen
Occurrence records around the UK and north-east Atlantic (OBIS).