plunge into
Intermediate (B1)neutral
To jump suddenly into something — water, a topic, or a difficult situation
"The diver plunged into the clear blue water from the high cliff."
Hear it in context

100 Iconic Moments From Sir David Attenborough | BBC Earth
BBC Earth · 321:36
Once there, they plunge into another world.

Newton’s three-body problem explained - Fabio Pacucci
TED-Ed · 0:44
plunge into the Sun or collide with Venus.

Sharks | 60 Minutes Full Episodes
60 Minutes · 28:48
plunge into bloody water with great white sharks all around.

Why You Grow Bitter As You Get Older — Arthur Schopenhauer
Einzelgänger · 3:14
we plunge into life with great expectations and even greater desires.

History PROVES Catholicism (Full Documentary)
Distinguo · 326:44
when we plunge into the depths of his heart we find ourselves