I request you to replace the following words: volcano surfing, quad racing, river buggers, ice climbing, world record

I request you to replace the following words: volcano surfing, quad racing, river buggers, ice climbing, world record, webbed gloves

1 The newest trend in extreme sports is known as volcanic boarding.
2 The young competitor in the quad race failed to appear for the event.
3 River riders glide swiftly down the rapids.
4 He firmly embedded his ice pick into the snowy mountainside.
5 A substantial crowd of divers took their laundry deep underwater to establish a global achievement.
6 Scaling a steep slope covered in ice presents a considerable challenge.
7 It is challenging to navigate the river without gloves with webbing.