article_snippet: The colourful mauve stingers (pictured) have tentacles that can grow around 13ft-long (four metre) and these eight tentacles are dangerous for unprotected divers.
article_snippet: The jellies have tentacles that can grow around 13ft-long (four metre) and are dangerous for unprotected divers.
article_snippet: The colourful jellies have tentacles that can grow around 13ft-long (four metre) and The colourful jellies are dangerous for unprotected divers.
article_snippet: Mr Doggett said: 'Despite all the dive gear, you still have to be careful not to get a stinging tentacle in the face so you do approach them with care. '
article_snippet: Some tentacles can be several metres long and could sting you before you see the jellyfish. '