Greater Weever – Trachinus draco
Seemingly inofensive but it has spines on its back fin that are poisonous and cause painful wounds. There was many of them in not very deep waters so it may be wise to enter the beach with water shoes in Playa Chica!
Most often they swim away if they see you, though.
Nice description here: https://www.diving-canary-islands.com/en/greater-weever-trachinus-draco/
The greater weever is a benthic and demersal venomous marine fish of the family Trachinidae. The greater weever is widely distributed along the eastern Atlantic coastline from Norway to Morocco, extending to the Mediterranean, Aegean and Black Seas.
''Trachinus draco'' has been shown to occur in depths ranging from shallow water up to -150 meters where it inhabits mostly muddy or sandy grounds.
''Trachinus draco'' is mostly and notoriously known for its venomous spines that can inflict.. more
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