Rung #38 — 2026-07-07

The answer was:

DOLPHIN

The clue ladder, cryptic to obvious:

5 pts: At birth I invent a name for myself — a whistled signature that only I will ever answer to.
4 pts: I live in tight-knit clans, hunt shoulder to shoulder, and rank among the cleverest minds in nature.
3 pts: I gave up dry land ages ago, and I hunt the black water by screaming and reading the echoes back.
2 pts: Quick and clever, I herd fish into a ball with my pod and leap in arcs above the waves.
1 pts: Sailors have long called me the friendliest soul in the sea, guiding the lost safely to shore.

Dolphins give each other names — unique signature whistles they use to identify and call one another.