Open wide! Scuba diver lets a long-legged sea spider crawl into his mouth to ‘clean his teeth’ as he lies on the sea floor

  • Peter McGuiness and wife Belinda were diving off the coast of Bali, Indonesia
  • They spotted their guide resting his head on the sea bed and opening his mouth 
  • The creatures float near his face before one enters his mouth and writhes around

This is the bizarre moment a scuba diver lets a sea spider crawl into his mouth and ‘clean his teeth’ as he lies on the bottom of the ocean.

Peter McGuiness and his wife Belinda were diving off the coast of Amed in Bali, Indonesia, when they spotted the eerie creatures.

They filmed their guide resting his head on the sea bed and opening his mouth.

Footage, captured off the coast of Amed in Bali, Indonesia, shows a diving guide lying on the sea bed with his mouth open as two sea spiders swim near his face

Two creatures can be seen floating near to his face before one swims into his open mouth.

The sea spider squirms around before the guide breathes out, sending it shooting backwards.

The instructor joked that the sea spider was ‘cleaning his teeth’.


One swims over into his open mouth. The creature can be seen squirming around as it ‘cleans his teeth’

Sea spiders are found in oceans across the globe, where they stride the seafloor with slow, deliberate steps.

They eat by stabbing stationary animals – such as sea anemones and sponges – with their long proboscises.

From here, they suck up tissue softened by the spider’s digestive juices.

Sea spiders don’t have gills, and instead take oxygen in via diffusion through their porous exoskeletons.

Most species of sea spider are smaller than a fingernail.

However, in the cold, oxygen-rich waters around Antarctica, giant species can grow to the size of dinner plates.

Sea spiders are found in oceans across the globe, where they stride the seafloor with slow, deliberate steps

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