These type of deaths are becoming an increasing threat to otter populations across the country.
"It had been a bad few weeks anyway because we'd found four otters killed on the roads, but we do expect that over winter," said Darren.
"To find two otters in the same trap was just devastating. The traps in themselves are not illegal and you can buy them over the counter.
"But to actually put them in the rivers you must have a licence from the Environment Agency and they will require a really good reason to put these traps in the river, because in this case it was deadly.
"A licensed trap will always have an otter guard on it that will prohibit the otter from actually getting into the traps.
Crayfish nets such as the one found in the River Wid are a real danger
"We're trying to talk to the manufacturers and people that sell these traps to say you shouldn't be supplying them without a guard in the first place."
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