The alleged attacker has been arrested, police say.
So far 18 people have been rescued from the sea with many of the survivors suffering from injuries after the incident.
The expedition also found a new species of dwarf squirrel and 10 types of butterfly.
The expedition also found a new species of dwarf squirrel and 10 types of butterfly.
Marcin Romanowski is facing 11 charges in Poland, including being accused of defrauding the state.
Marcin Romanowski is facing 11 charges in Poland, including being accused of defrauding the state.
The alleged attacker has been arrested, police say.
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