The BBC’s Natural History Unit has spent four years filming the new documentary and has visited every continent and ocean.James Honeyborne, the series' executive producer, added: “The oceans are the most exciting place to be right now, because new scientific discoveries have given us a new perspective of life beneath the waves.“Blue Planet II is taking its cue from these breakthroughs, unveiling unbelievable new places, extraordinary new behaviours and remarkable new creatures.But with temperatures reaching -50 degrees and with winds of up to 100mph, conditions drive extreme behaviour."This was the coldest overall shoot on all of Frozen Planet," Hunter told BBC Nature.
"We tried heating the cameras but the plastic cables to the battery packs snapped like bread sticks and the plastic covers broke apart like poppadoms.
The BBC has announced that the new seven-part series will air later this year, 16 years after The Blue Planet was first broadcast.
The new instalment will highlight recent scientific discoveries including a new species of crab with a hairy chest and a tuskfish that uses tools.
Part One: What Females Want | Part Two: What Males Will Do Female jumping spiders will attack and eat anything that moves.
This often includes males who may be courting them.