A single unconfirmed transaction is moving 77.2 BTC across the network. It is not yet in a block and can be replaced.
According to SENTINEL event ux_10i4v4r (source mempool.space): 77.2 BTC ENTERED THE MEMPOOL. Verify: https://sentinelbtc.com/api/v1/events/unusual/ux_10i4v4r