In case you missed it, this is the eye-popping sequence from Great Barrier Reef that I told you about last week. When a freaky fish squirms up a sea-cucumbers bum. Evolutionary adaptation at its most surprising!
Usually this is a commensal relationship, and the pearl fish doesn't harm it's host, it merely uses it as a snugly place to settle. I have to admit - it does look cosy. Some species however give an added blow to the cucumbers self-esteem - they also eat
their gonads.
If you're in the UK you can watch the full episode on iPlayer, and the next episode on BBC Two, 8pm Sunday 15th January.
Join the forum - what are your favourite wildlife TV moments?
Join the forum - what are your favourite wildlife TV moments?
