Snorkeling Equipment - Choice of fins (flippers)

Minimise blisters with a fairly tight, but very elastic 'saddle'

Shorter fins probably better for snorkeling photography than long fins

Size
Does fin size matter?   Yes - but 'big'/ 'long' - isn't necessarily better.

Long gives you more propulsion.   You might want 'long' when you encounter a strong current.

But, 'long' means you are more likely to hit that precious coral.   And, 'long', if you aren't fit, means tired legs quicker than from smaller fins.

Snorkeling is usually neither a marathon, nor a sprint.   It's a meander, except in a strong current.
whitespotted filefish and flipper
The flipper can get in the way!

A backstrap can allow foot slippage which leads to rubbing (tighten the strap to minimise obviously).

A reasonably tight-fitting fin with a tight but elastic 'saddle' or strap over the foot, with a back to the fin seems to minimise rubbing and blistering.

Split fins
Split fins give more speed but less manouverability than solid fins.   Manouverability is needed to follow fish and swim around coral.
iguana lizard going slow
Rarely is there a need for speed.

Snorkeling gear
P4 of 4
Next - which underwater camera