Newquay’s Blue Reef Aquarium is showcasing a bizarre apple-shaped sea cucumber from Australia in a new toxic display. The sea apple is a type of sea cucumber which is also related to urchins and starfish. It gets its name from its apple-shaped appearance and is brightly coloured to alert would-be predators to its deadly toxins. Blue Reef curator Matt Slater said: “It’s the first time we have been able to put sea apples on display and they really are extremely unusual creatures. “We’ve had to keep them in their own display away from the other fish as they are extremely...