The dex
Every entry remembers who found it first.
Tidal
TidalA droplet sits on its brow and never falls off. Counts everything in pairs and is unsettled by odd numbers.
Form1 of 4First@david
Undertow
UndertowLearned that pushing once is pointless. Now it pushes, waits, and pushes again.
Form2 of 4First@david
Fathom
FathomTraded its ears for fins somewhere around the fourth week. It can hear you fine. It would rather not answer.
Form3 of 4First@david
Maelstrom
MaelstromThree fins, a split tail, and no interest in shallow work. Everything arrives at once or not at all.
Form4 of 4First@davidEvery egg gives you one shipmunk, and each evolves through four forms. Collecting one means seeing all four.